diff --git a/src/libslic3r/ExtrusionEntity.hpp b/src/libslic3r/ExtrusionEntity.hpp
index cce3020f8..a62a189ce 100644
--- a/src/libslic3r/ExtrusionEntity.hpp
+++ b/src/libslic3r/ExtrusionEntity.hpp
@@ -113,15 +113,17 @@ public:
     float feedrate;
     // Id of the extruder, used for visualization purposed.
     unsigned int extruder_id;
+    // Id of the color, used for visualization purposed in the color printing case.
+    unsigned int cp_color_id;
 
-    ExtrusionPath(ExtrusionRole role) : mm3_per_mm(-1), width(-1), height(-1), feedrate(0.0f), extruder_id(0), m_role(role) {};
-    ExtrusionPath(ExtrusionRole role, double mm3_per_mm, float width, float height) : mm3_per_mm(mm3_per_mm), width(width), height(height), feedrate(0.0f), extruder_id(0), m_role(role) {};
-    ExtrusionPath(const ExtrusionPath &rhs) : polyline(rhs.polyline), mm3_per_mm(rhs.mm3_per_mm), width(rhs.width), height(rhs.height), feedrate(rhs.feedrate), extruder_id(rhs.extruder_id), m_role(rhs.m_role) {}
-    ExtrusionPath(ExtrusionPath &&rhs) : polyline(std::move(rhs.polyline)), mm3_per_mm(rhs.mm3_per_mm), width(rhs.width), height(rhs.height), feedrate(rhs.feedrate), extruder_id(rhs.extruder_id), m_role(rhs.m_role) {}
+    ExtrusionPath(ExtrusionRole role) : mm3_per_mm(-1), width(-1), height(-1), feedrate(0.0f), extruder_id(0), cp_color_id(0), m_role(role) {};
+    ExtrusionPath(ExtrusionRole role, double mm3_per_mm, float width, float height) : mm3_per_mm(mm3_per_mm), width(width), height(height), feedrate(0.0f), extruder_id(0), cp_color_id(0), m_role(role) {};
+    ExtrusionPath(const ExtrusionPath &rhs) : polyline(rhs.polyline), mm3_per_mm(rhs.mm3_per_mm), width(rhs.width), height(rhs.height), feedrate(rhs.feedrate), extruder_id(rhs.extruder_id), cp_color_id(rhs.cp_color_id), m_role(rhs.m_role) {}
+    ExtrusionPath(ExtrusionPath &&rhs) : polyline(std::move(rhs.polyline)), mm3_per_mm(rhs.mm3_per_mm), width(rhs.width), height(rhs.height), feedrate(rhs.feedrate), extruder_id(rhs.extruder_id), cp_color_id(rhs.cp_color_id), m_role(rhs.m_role) {}
 //    ExtrusionPath(ExtrusionRole role, const Flow &flow) : m_role(role), mm3_per_mm(flow.mm3_per_mm()), width(flow.width), height(flow.height), feedrate(0.0f), extruder_id(0) {};
 
-    ExtrusionPath& operator=(const ExtrusionPath &rhs) { m_role = rhs.m_role; this->mm3_per_mm = rhs.mm3_per_mm; this->width = rhs.width; this->height = rhs.height; this->feedrate = rhs.feedrate, this->extruder_id = rhs.extruder_id, this->polyline = rhs.polyline; return *this; }
-    ExtrusionPath& operator=(ExtrusionPath &&rhs) { m_role = rhs.m_role; this->mm3_per_mm = rhs.mm3_per_mm; this->width = rhs.width; this->height = rhs.height; this->feedrate = rhs.feedrate, this->extruder_id = rhs.extruder_id, this->polyline = std::move(rhs.polyline); return *this; }
+    ExtrusionPath& operator=(const ExtrusionPath &rhs) { m_role = rhs.m_role; this->mm3_per_mm = rhs.mm3_per_mm; this->width = rhs.width; this->height = rhs.height; this->feedrate = rhs.feedrate, this->extruder_id = rhs.extruder_id, this->cp_color_id = rhs.cp_color_id, this->polyline = rhs.polyline; return *this; }
+    ExtrusionPath& operator=(ExtrusionPath &&rhs) { m_role = rhs.m_role; this->mm3_per_mm = rhs.mm3_per_mm; this->width = rhs.width; this->height = rhs.height; this->feedrate = rhs.feedrate, this->extruder_id = rhs.extruder_id, this->cp_color_id = rhs.cp_color_id, this->polyline = std::move(rhs.polyline); return *this; }
 
     ExtrusionPath* clone() const { return new ExtrusionPath (*this); }
     void reverse() { this->polyline.reverse(); }
diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index b9625523d..bcfb8faec 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -1322,7 +1322,7 @@ void GCode::process_layer(
     // In case there are more toolchange requests that weren't done yet and should happen simultaneously, erase them all.
     // (Layers can be close to each other, model could have been resliced with bigger layer height, ...).
     bool colorprint_change = false;
-    while (!m_colorprint_heights.empty() && m_colorprint_heights.front()-EPSILON < layer.print_z) {
+    while (!m_colorprint_heights.empty() && m_colorprint_heights.front()/*-EPSILON*/ < layer.print_z-EPSILON) {
         m_colorprint_heights.erase(m_colorprint_heights.begin());
         colorprint_change = true;
     }
diff --git a/src/libslic3r/GCode/Analyzer.cpp b/src/libslic3r/GCode/Analyzer.cpp
index e3cd67e7c..c56f02753 100644
--- a/src/libslic3r/GCode/Analyzer.cpp
+++ b/src/libslic3r/GCode/Analyzer.cpp
@@ -14,6 +14,7 @@ static const float MMMIN_TO_MMSEC = 1.0f / 60.0f;
 static const float INCHES_TO_MM = 25.4f;
 static const float DEFAULT_FEEDRATE = 0.0f;
 static const unsigned int DEFAULT_EXTRUDER_ID = 0;
+static const unsigned int DEFAULT_COLOR_PRINT_ID = 0;
 static const Slic3r::Vec3d DEFAULT_START_POSITION = Slic3r::Vec3d(0.0f, 0.0f, 0.0f);
 static const float DEFAULT_START_EXTRUSION = 0.0f;
 
@@ -31,6 +32,7 @@ const float GCodeAnalyzer::Default_Height = 0.0f;
 GCodeAnalyzer::Metadata::Metadata()
     : extrusion_role(erNone)
     , extruder_id(DEFAULT_EXTRUDER_ID)
+    , cp_color_id(DEFAULT_COLOR_PRINT_ID)
     , mm3_per_mm(GCodeAnalyzer::Default_mm3_per_mm)
     , width(GCodeAnalyzer::Default_Width)
     , height(GCodeAnalyzer::Default_Height)
@@ -38,13 +40,14 @@ GCodeAnalyzer::Metadata::Metadata()
 {
 }
 
-GCodeAnalyzer::Metadata::Metadata(ExtrusionRole extrusion_role, unsigned int extruder_id, double mm3_per_mm, float width, float height, float feedrate)
+GCodeAnalyzer::Metadata::Metadata(ExtrusionRole extrusion_role, unsigned int extruder_id, double mm3_per_mm, float width, float height, float feedrate, unsigned int cp_color_id/* = 0*/)
     : extrusion_role(extrusion_role)
     , extruder_id(extruder_id)
     , mm3_per_mm(mm3_per_mm)
     , width(width)
     , height(height)
     , feedrate(feedrate)
+    , cp_color_id(cp_color_id)
 {
 }
 
@@ -68,12 +71,15 @@ bool GCodeAnalyzer::Metadata::operator != (const GCodeAnalyzer::Metadata& other)
     if (feedrate != other.feedrate)
         return true;
 
+    if (cp_color_id != other.cp_color_id)
+        return true;
+
     return false;
 }
 
-GCodeAnalyzer::GCodeMove::GCodeMove(GCodeMove::EType type, ExtrusionRole extrusion_role, unsigned int extruder_id, double mm3_per_mm, float width, float height, float feedrate, const Vec3d& start_position, const Vec3d& end_position, float delta_extruder)
+GCodeAnalyzer::GCodeMove::GCodeMove(GCodeMove::EType type, ExtrusionRole extrusion_role, unsigned int extruder_id, double mm3_per_mm, float width, float height, float feedrate, const Vec3d& start_position, const Vec3d& end_position, float delta_extruder, unsigned int cp_color_id/* = 0*/)
     : type(type)
-    , data(extrusion_role, extruder_id, mm3_per_mm, width, height, feedrate)
+    , data(extrusion_role, extruder_id, mm3_per_mm, width, height, feedrate, cp_color_id)
     , start_position(start_position)
     , end_position(end_position)
     , delta_extruder(delta_extruder)
@@ -101,6 +107,7 @@ void GCodeAnalyzer::reset()
     _set_e_local_positioning_type(Absolute);
     _set_extrusion_role(erNone);
     _set_extruder_id(DEFAULT_EXTRUDER_ID);
+    _set_cp_color_id(DEFAULT_COLOR_PRINT_ID);
     _set_mm3_per_mm(Default_mm3_per_mm);
     _set_width(Default_Width);
     _set_height(Default_Height);
@@ -220,6 +227,11 @@ void GCodeAnalyzer::_process_gcode_line(GCodeReader&, const GCodeReader::GCodeLi
             {
                 switch (::atoi(&cmd[1]))
                 {
+                case 600: // Set color change
+                    {
+                        _processM600(line);
+                        break;
+                    }
                 case 82: // Set extruder to absolute mode
                     {
                         _processM82(line);
@@ -401,6 +413,12 @@ void GCodeAnalyzer::_processM83(const GCodeReader::GCodeLine& line)
     _set_e_local_positioning_type(Relative);
 }
 
+void GCodeAnalyzer::_processM600(const GCodeReader::GCodeLine& line)
+{
+    m_state.cur_cp_color_id++;
+    _set_cp_color_id(m_state.cur_cp_color_id);
+}
+
 void GCodeAnalyzer::_processT(const GCodeReader::GCodeLine& line)
 {
     std::string cmd = line.cmd();
@@ -532,6 +550,16 @@ unsigned int GCodeAnalyzer::_get_extruder_id() const
     return m_state.data.extruder_id;
 }
 
+void GCodeAnalyzer::_set_cp_color_id(unsigned int id)
+{
+    m_state.data.cp_color_id = id;
+}
+
+unsigned int GCodeAnalyzer::_get_cp_color_id() const
+{
+    return m_state.data.cp_color_id;
+}
+
 void GCodeAnalyzer::_set_mm3_per_mm(double value)
 {
     m_state.data.mm3_per_mm = value;
@@ -625,7 +653,7 @@ void GCodeAnalyzer::_store_move(GCodeAnalyzer::GCodeMove::EType type)
         it = m_moves_map.insert(TypeToMovesMap::value_type(type, GCodeMovesList())).first;
 
     // store move
-    it->second.emplace_back(type, _get_extrusion_role(), _get_extruder_id(), _get_mm3_per_mm(), _get_width(), _get_height(), _get_feedrate(), _get_start_position(), _get_end_position(), _get_delta_extrusion());
+    it->second.emplace_back(type, _get_extrusion_role(), _get_extruder_id(), _get_mm3_per_mm(), _get_width(), _get_height(), _get_feedrate(), _get_start_position(), _get_end_position(), _get_delta_extrusion(), _get_cp_color_id());
 }
 
 bool GCodeAnalyzer::_is_valid_extrusion_role(int value) const
@@ -660,6 +688,7 @@ void GCodeAnalyzer::_calc_gcode_preview_extrusion_layers(GCodePreviewData& previ
                 path.polyline = polyline;
                 path.feedrate = data.feedrate;
                 path.extruder_id = data.extruder_id;
+                path.cp_color_id = data.cp_color_id;
 
                 get_layer_at_z(preview_data.extrusion.layers, z).paths.push_back(path);
             }
diff --git a/src/libslic3r/GCode/Analyzer.hpp b/src/libslic3r/GCode/Analyzer.hpp
index 97ee6381b..f50138b56 100644
--- a/src/libslic3r/GCode/Analyzer.hpp
+++ b/src/libslic3r/GCode/Analyzer.hpp
@@ -53,9 +53,10 @@ public:
         float width;     // mm
         float height;    // mm
         float feedrate;  // mm/s
+        unsigned int cp_color_id;
 
         Metadata();
-        Metadata(ExtrusionRole extrusion_role, unsigned int extruder_id, double mm3_per_mm, float width, float height, float feedrate);
+        Metadata(ExtrusionRole extrusion_role, unsigned int extruder_id, double mm3_per_mm, float width, float height, float feedrate, unsigned int cp_color_id = 0);
 
         bool operator != (const Metadata& other) const;
     };
@@ -79,7 +80,7 @@ public:
         Vec3d end_position;
         float delta_extruder;
 
-        GCodeMove(EType type, ExtrusionRole extrusion_role, unsigned int extruder_id, double mm3_per_mm, float width, float height, float feedrate, const Vec3d& start_position, const Vec3d& end_position, float delta_extruder);
+        GCodeMove(EType type, ExtrusionRole extrusion_role, unsigned int extruder_id, double mm3_per_mm, float width, float height, float feedrate, const Vec3d& start_position, const Vec3d& end_position, float delta_extruder, unsigned int cp_color_id = 0);
         GCodeMove(EType type, const Metadata& data, const Vec3d& start_position, const Vec3d& end_position, float delta_extruder);
     };
 
@@ -96,6 +97,7 @@ private:
         Vec3d start_position = Vec3d::Zero();
         float start_extrusion;
         float position[Num_Axis];
+        unsigned int cur_cp_color_id = 0;
     };
 
 private:
@@ -154,6 +156,9 @@ private:
     // Set extruder to relative mode
     void _processM83(const GCodeReader::GCodeLine& line);
 
+    // Set color change
+    void _processM600(const GCodeReader::GCodeLine& line);
+
     // Processes T line (Select Tool)
     void _processT(const GCodeReader::GCodeLine& line);
 
@@ -188,6 +193,9 @@ private:
     void _set_extruder_id(unsigned int id);
     unsigned int _get_extruder_id() const;
 
+    void _set_cp_color_id(unsigned int id);
+    unsigned int _get_cp_color_id() const;
+
     void _set_mm3_per_mm(double value);
     double _get_mm3_per_mm() const;
 
diff --git a/src/libslic3r/GCode/PreviewData.cpp b/src/libslic3r/GCode/PreviewData.cpp
index 564fc34dc..ef38a5db3 100644
--- a/src/libslic3r/GCode/PreviewData.cpp
+++ b/src/libslic3r/GCode/PreviewData.cpp
@@ -219,6 +219,7 @@ void GCodePreviewData::Travel::set_default()
     width = Default_Width;
     height = Default_Height;
     ::memcpy((void*)type_colors, (const void*)Default_Type_Colors, Num_Types * sizeof(Color));
+    color_print_idx = 0;
 
     is_visible = false;
 }
@@ -374,12 +375,14 @@ std::string GCodePreviewData::get_legend_title() const
         return L("Volumetric flow rate (mm3/s)");
     case Extrusion::Tool:
         return L("Tool");
+    case Extrusion::ColorPrint:
+        return L("Color Print");
     }
 
     return "";
 }
 
-GCodePreviewData::LegendItemsList GCodePreviewData::get_legend_items(const std::vector<float>& tool_colors) const
+GCodePreviewData::LegendItemsList GCodePreviewData::get_legend_items(const std::vector<float>& tool_colors, const int color_print_cnt /*= 0*/) const
 {
     struct Helper
     {
@@ -445,6 +448,18 @@ GCodePreviewData::LegendItemsList GCodePreviewData::get_legend_items(const std::
                 items.emplace_back((boost::format(Slic3r::I18N::translate(L("Extruder %d"))) % (i + 1)).str(), color);
             }
 
+            break;
+        }
+    case Extrusion::ColorPrint:
+        {
+            for (int i = color_print_cnt; i >= 0 ; --i)
+            {
+                int val = i;
+                while (val >= GCodePreviewData::Range::Colors_Count)
+                    val -= GCodePreviewData::Range::Colors_Count;
+                GCodePreviewData::Color color = Range::Default_Colors[val];
+                items.emplace_back((boost::format(Slic3r::I18N::translate(L("Color %d"))) % (i + 1)).str(), color);
+            }
             break;
         }
     }
diff --git a/src/libslic3r/GCode/PreviewData.hpp b/src/libslic3r/GCode/PreviewData.hpp
index 966e2e796..5b944c992 100644
--- a/src/libslic3r/GCode/PreviewData.hpp
+++ b/src/libslic3r/GCode/PreviewData.hpp
@@ -71,6 +71,7 @@ public:
             Feedrate,
             VolumetricRate,
             Tool,
+            ColorPrint,
             Num_View_Types
         };
 
@@ -140,6 +141,7 @@ public:
         float height;
         Color type_colors[Num_Types];
         bool is_visible;
+        size_t color_print_idx;
 
         void set_default();
     };
@@ -196,7 +198,7 @@ public:
     void set_extrusion_paths_colors(const std::vector<std::string>& colors);
 
     std::string get_legend_title() const;
-    LegendItemsList get_legend_items(const std::vector<float>& tool_colors) const;
+    LegendItemsList get_legend_items(const std::vector<float>& tool_colors, const int color_print_cnt = 1) const;
 };
 
 GCodePreviewData::Color operator + (const GCodePreviewData::Color& c1, const GCodePreviewData::Color& c2);
diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 42df2f421..fd3287d81 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -3119,7 +3119,10 @@ bool GLCanvas3D::LegendTexture::generate(const GCodePreviewData& preview_data, c
 
     // collects items to render
     auto title = _(preview_data.get_legend_title());
-    const GCodePreviewData::LegendItemsList& items = preview_data.get_legend_items(tool_colors);
+
+    const auto& config = wxGetApp().preset_bundle->full_config();
+    const int color_print_cnt = config.option<ConfigOptionFloats>("colorprint_heights")->values.size();
+    const GCodePreviewData::LegendItemsList& items = preview_data.get_legend_items(tool_colors, color_print_cnt);
 
     unsigned int items_count = (unsigned int)items.size();
     if (items_count == 0)
@@ -6473,6 +6476,8 @@ void GLCanvas3D::_load_gcode_extrusion_paths(const GCodePreviewData& preview_dat
                 return path.feedrate * (float)path.mm3_per_mm;
             case GCodePreviewData::Extrusion::Tool:
                 return (float)path.extruder_id;
+            case GCodePreviewData::Extrusion::ColorPrint:
+                return (float)path.cp_color_id;
             default:
                 return 0.0f;
             }
@@ -6500,6 +6505,15 @@ void GLCanvas3D::_load_gcode_extrusion_paths(const GCodePreviewData& preview_dat
                 ::memcpy((void*)color.rgba, (const void*)(tool_colors.data() + (unsigned int)value * 4), 4 * sizeof(float));
                 return color;
             }
+            case GCodePreviewData::Extrusion::ColorPrint:
+            {
+                int val = int(value);
+                while (val >= GCodePreviewData::Range::Colors_Count)
+                    val -= GCodePreviewData::Range::Colors_Count;
+                    
+                GCodePreviewData::Color color = GCodePreviewData::Range::Default_Colors[val];
+                return color;
+            }
             default:
                 return GCodePreviewData::Color::Dummy;
             }
diff --git a/src/slic3r/GUI/GUI_Preview.cpp b/src/slic3r/GUI/GUI_Preview.cpp
index cae7440f6..0e533134a 100644
--- a/src/slic3r/GUI/GUI_Preview.cpp
+++ b/src/slic3r/GUI/GUI_Preview.cpp
@@ -89,6 +89,7 @@ bool Preview::init(wxNotebook* notebook, DynamicPrintConfig* config, BackgroundS
     m_choice_view_type->Append(_(L("Speed")));
     m_choice_view_type->Append(_(L("Volumetric flow rate")));
     m_choice_view_type->Append(_(L("Tool")));
+    m_choice_view_type->Append(_(L("Color Print")));
     m_choice_view_type->SetSelection(0);
 
     m_label_show_features = new wxStaticText(this, wxID_ANY, _(L("Show")));
@@ -466,12 +467,14 @@ void Preview::set_double_slider_thumbs(const bool force_sliders_full_range,
     }
 
     for (int i = layers_z.size() - 1; i >= 0; i--)
-        if (z_low >= layers_z[i]) {
+//         if (z_low >= layers_z[i]) {
+        if (fabs(z_low - layers_z[i]) <= 1e-6) {
             m_slider->SetLowerValue(i);
             break;
         }
     for (int i = layers_z.size() - 1; i >= 0; i--)
-        if (z_high >= layers_z[i]) {
+//         if (z_high >= layers_z[i]) {
+        if (fabs(z_high-layers_z[i]) <= 1e-6) {
             m_slider->SetHigherValue(i);
             break;
         }
diff --git a/src/slic3r/GUI/wxExtensions.cpp b/src/slic3r/GUI/wxExtensions.cpp
index dda731945..b14c958ed 100644
--- a/src/slic3r/GUI/wxExtensions.cpp
+++ b/src/slic3r/GUI/wxExtensions.cpp
@@ -1474,7 +1474,7 @@ void PrusaDoubleSlider::SetTicksValues(const std::vector<double>& heights)
             ++i;
         if (i == m_values.size())
             return;
-        m_ticks.insert(i);
+        m_ticks.insert(i-1);
     }
 
 }
@@ -1895,18 +1895,16 @@ void PrusaDoubleSlider::action_tick(const TicksAction action)
 
     const int tick = m_selection == ssLower ? m_lower_value : m_higher_value;
 
-    if (action == taOnIcon && !m_ticks.insert(tick).second)
-        m_ticks.erase(tick);
+    if (action == taOnIcon) {
+        if (!m_ticks.insert(tick).second)
+            m_ticks.erase(tick);
+    }
     else {
         const auto it = m_ticks.find(tick);
         if (it == m_ticks.end() && action == taAdd)
             m_ticks.insert(tick);
         else if (it != m_ticks.end() && action == taDel)
             m_ticks.erase(tick);
-        else {
-            wxPostEvent(this->GetParent(), wxCommandEvent(wxCUSTOMEVT_TICKSCHANGED));
-            return;
-        }
     }
 
     wxPostEvent(this->GetParent(), wxCommandEvent(wxCUSTOMEVT_TICKSCHANGED));