diff --git a/resources/profiles/PrusaResearch.ini b/resources/profiles/PrusaResearch.ini
index 27d80b5337..12f16679b2 100644
--- a/resources/profiles/PrusaResearch.ini
+++ b/resources/profiles/PrusaResearch.ini
@@ -4752,7 +4752,7 @@ exposure_time = 10
 initial_exposure_time = 20
 material_type = Tough
 material_vendor = Harz Labs
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Harz Labs Dental Cast Red @0.025]
 inherits = *common 0.025*
@@ -4768,7 +4768,7 @@ exposure_time = 6
 initial_exposure_time = 30
 material_type = Tough
 material_vendor = Esun
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Photocentric Ash Grey @0.025]
 inherits = *common 0.025*
@@ -4800,7 +4800,7 @@ exposure_time = 4
 initial_exposure_time = 35
 material_type = Tough
 material_vendor = Monocure
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Monocure 3D Blue Rapid Resin @0.025]
 inherits = *common 0.025*
@@ -4826,7 +4826,7 @@ exposure_time = 5
 initial_exposure_time = 35
 material_type = Tough
 material_vendor = Prusa Polymers
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusament Resin Tough Anthracite Grey @0.025]
 inherits = *common 0.025*
@@ -4995,7 +4995,7 @@ exposure_time = 5
 initial_exposure_time = 35
 material_type = Tough
 material_vendor = Made for Prusa
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusa Deep Blue Transparent Tough @0.025]
 inherits = *common 0.025*
@@ -5131,7 +5131,7 @@ exposure_time = 4
 initial_exposure_time = 35
 material_type = Tough
 material_vendor = Zortrax
-material_colour = #007EFD
+material_colour = #595959
 
 ########### Materials 0.05
 
@@ -5253,7 +5253,7 @@ exposure_time = 6
 initial_exposure_time = 35
 material_type = Tough
 material_vendor = Monocure
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Monocure 3D Blue Rapid Resin @0.05]
 inherits = *common 0.05*
@@ -5309,7 +5309,7 @@ exposure_time = 7
 initial_exposure_time = 30
 material_type = Tough
 material_vendor = Esun
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:FunToDo Castable Blend Red @0.05]
 inherits = *common 0.05*
@@ -5349,7 +5349,7 @@ exposure_time = 20
 initial_exposure_time = 40
 material_type = Tough
 material_vendor = 3DM
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:3DM-DENT @0.05]
 inherits = *common 0.05*
@@ -5429,7 +5429,7 @@ exposure_time = 13
 initial_exposure_time = 20
 material_type = Tough
 material_vendor = Harz Labs
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Harz Labs Dental Cast Red @0.05]
 inherits = *common 0.05*
@@ -5533,7 +5533,7 @@ exposure_time = 9
 initial_exposure_time = 35
 material_type = Tough
 material_vendor = Siraya Tech
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:NextDent Model 2.0 Grey @0.05]
 inherits = *common 0.05*
@@ -5621,7 +5621,7 @@ exposure_time = 7
 initial_exposure_time = 35
 material_type = Tough
 material_vendor = Zortrax
-material_colour = #007EFD
+material_colour = #595959
 
 ## Prusa Polymers 0.05
 
@@ -5639,7 +5639,7 @@ exposure_time = 6
 initial_exposure_time = 35
 material_type = Tough
 material_vendor = Prusa Polymers
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusament Resin Tough Anthracite Grey @0.05]
 inherits = *common 0.05*
@@ -5681,7 +5681,7 @@ exposure_time = 6
 initial_exposure_time = 35
 material_type = Tough
 material_vendor = Made for Prusa
-material_colour = #007EFD
+material_colour = #595959
 
 ## [sla_material:Prusa Super Low Odor Beige Tough @0.05]
 ## inherits = *common 0.05*
@@ -5901,7 +5901,7 @@ exposure_time = 8
 initial_exposure_time = 35
 material_type = Tough
 material_vendor = Made for Prusa
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusa Deep Blue Transparent Tough @0.05]
 inherits = *common 0.05*
@@ -5955,7 +5955,7 @@ exposure_time = 13
 initial_exposure_time = 45
 material_type = Tough
 material_vendor = Prusa Polymers
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusament Resin Tough Anthracite Grey @0.1]
 inherits = *common 0.1*
@@ -6021,7 +6021,7 @@ exposure_time = 13
 initial_exposure_time = 55
 material_type = Tough
 material_vendor = Made for Prusa
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusa Transparent Tough @0.1]
 inherits = *common 0.1*
@@ -6075,7 +6075,7 @@ exposure_time = 1.8
 initial_exposure_time = 25
 material_type = Tough
 material_vendor = Prusa Polymers
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusament Resin Tough Anthracite Grey @0.025 SL1S]
 inherits = *0.025_sl1s*
@@ -6117,7 +6117,7 @@ exposure_time = 2
 initial_exposure_time = 25
 material_type = Tough
 material_vendor = Made for Prusa
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusa Cyan Tough @0.025 SL1S]
 inherits = *0.025_sl1s*
@@ -6321,7 +6321,7 @@ exposure_time = 2
 initial_exposure_time = 25
 material_type = Tough
 material_vendor = Prusa Polymers
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusament Resin Tough Anthracite Grey @0.05 SL1S]
 inherits = *0.05_sl1s*
@@ -6363,7 +6363,7 @@ exposure_time = 2.4
 initial_exposure_time = 25
 material_type = Tough
 material_vendor = Made for Prusa
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusa Cyan Tough @0.05 SL1S]
 inherits = *0.05_sl1s*
@@ -6567,7 +6567,7 @@ exposure_time = 2.6
 initial_exposure_time = 25
 material_type = Tough
 material_vendor = Prusa Polymers
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusament Resin Tough Anthracite Grey @0.1 SL1S]
 inherits = *0.1_sl1s*
@@ -6609,7 +6609,7 @@ exposure_time = 3
 initial_exposure_time = 25
 material_type = Tough
 material_vendor = Made for Prusa
-material_colour = #007EFD
+material_colour = #595959
 
 [sla_material:Prusa Cyan Tough @0.1 SL1S]
 inherits = *0.1_sl1s*