diff --git a/init.lua b/init.lua
index 36007dd..cb60122 100644
--- a/init.lua
+++ b/init.lua
@@ -807,7 +807,7 @@ local vps = 1.3 -- vertical position scale
 local vs = 0.3  -- vertical shift/offset
 local color_button_size = ";0.75,0.75;"
 
-function unifieddyes.make_colored_square(hexcolor, colorname, showall, creative, painting_with, nodepalette, hp, v2, selindic, inv)
+function unifieddyes.make_colored_square(hexcolor, colorname, showall, creative, painting_with, nodepalette, hp, v2, selindic, inv, explist)
 
 	local dye = "dye:"..colorname
 
@@ -819,7 +819,8 @@ function unifieddyes.make_colored_square(hexcolor, colorname, showall, creative,
 	end
 
 	local unavail_overlay = ""
-	if not showall and not unifieddyes.palette_has_color[nodepalette.."_"..colorname] then
+	if not showall and not unifieddyes.palette_has_color[nodepalette.."_"..colorname]
+		or (explist and not explist[colorname]) then
 		if overlay == "" then
 			unavail_overlay = "^unifieddyes_unavailable_overlay.png"
 		else
@@ -876,6 +877,8 @@ function unifieddyes.show_airbrush_form(player)
 		t[#t+1] = "label[0.5,8.25;(Right-clicked a node not supported by the Airbrush, showing all colors)]"
 	end
 
+	local explist = last_right_click.def.explist
+
 	for v = 0, 6 do
 		local val = unifieddyes.VALS_EXTENDED[v+1]
 
@@ -902,7 +905,7 @@ function unifieddyes.show_airbrush_form(player)
 
 			local hexcolor = string.format("%02x", r2)..string.format("%02x", g2)..string.format("%02x", b2)
 			local f
-			f, selindic = unifieddyes.make_colored_square(hexcolor, val..hue..sat, showall, creative, painting_with, nodepalette, hp, v2, selindic, inv)
+			f, selindic = unifieddyes.make_colored_square(hexcolor, val..hue..sat, showall, creative, painting_with, nodepalette, hp, v2, selindic, inv, explist)
 			t[#t+1] = f
 		end
 
@@ -935,7 +938,7 @@ function unifieddyes.show_airbrush_form(player)
 
 				local hexcolor = string.format("%02x", r3)..string.format("%02x", g3)..string.format("%02x", b3)
 				local f
-				f, selindic = unifieddyes.make_colored_square(hexcolor, val..hue..sat, showall, creative, painting_with, nodepalette, hp, v2, selindic, inv)
+				f, selindic = unifieddyes.make_colored_square(hexcolor, val..hue..sat, showall, creative, painting_with, nodepalette, hp, v2, selindic, inv, explist)
 				t[#t+1] = f
 			end
 		end
@@ -957,7 +960,7 @@ function unifieddyes.show_airbrush_form(player)
 		end
 
 		local f
-		f, selindic = unifieddyes.make_colored_square(hexgrey, grey, showall, creative, painting_with, nodepalette, hp, v2, selindic, inv)
+		f, selindic = unifieddyes.make_colored_square(hexgrey, grey, showall, creative, painting_with, nodepalette, hp, v2, selindic, inv, explist)
 		t[#t+1] = f
 
 	end