diff --git a/vitamins/pcb.scad b/vitamins/pcb.scad
index 289cc84..43e99e7 100644
--- a/vitamins/pcb.scad
+++ b/vitamins/pcb.scad
@@ -988,7 +988,7 @@ module pcb_assembly(type, height, thickness) { //! Draw PCB assembly with spaces
             translate_z(height + pcb_thickness(type))
                 screw(screw, screw_length);
 
-            color(pp1_colour)
+            stl_colour(pp1_colour)
                 if(taper)
                     pcb_spacer(screw, height, taper = 2);
                 else
diff --git a/vitamins/veroboard.scad b/vitamins/veroboard.scad
index 3b1cb49..b6c1938 100644
--- a/vitamins/veroboard.scad
+++ b/vitamins/veroboard.scad
@@ -162,7 +162,7 @@ assembly(vero_assembly(type)) {
             else
                 screw_and_washer(screw, screw_length);
 
-        color(pp1_colour) pcb_spacer(screw, height);
+        stl_colour(pp1_colour) pcb_spacer(screw, height);
 
         translate_z(-thickness)
             vflip()
diff --git a/vitamins/washer.scad b/vitamins/washer.scad
index 7c4aacc..2fcd4e1 100644
--- a/vitamins/washer.scad
+++ b/vitamins/washer.scad
@@ -122,7 +122,7 @@ module printed_washer(type, name = false) { //! Create printed washer
     t = round_to_layer(washer_thickness(type));
     or = washer_radius(type);
     ir = washer_id(type) / 2;
-    color(pp1_colour)
+    stl_colour(pp1_colour)
         linear_extrude(t, center = false, convexity = 2)
             poly_ring(or, ir);