Fill textures with SetColorTexture instead of color-form SetTexture

ClassicAPI's SetColorTexture is the same engine call as SetTexture(r, g, b [, a]) under the name that says what it does. 83 calls across 25 files, renamed only.

modules/chat.lua

@@ -457,7 +457,7 @@ pfUI:RegisterModule("chat", function ()
 
       -- hide textures
       for j,v in ipairs({tab:GetRegions()}) do
-        if j==5 then v:SetTexture(0,0,0,0) end
+        if j==5 then v:SetColorTexture(0,0,0,0) end
         v:SetHeight(C.global.font_size+default_border*2)
       end