diff --git a/init.lua b/init.lua
index 11337ab..5abd3f3 100644
--- a/init.lua
+++ b/init.lua
@@ -183,7 +183,7 @@ else
 
 	-- Test
 	dofile(MP.."/recipe_checker.lua")
-	dofile(MP.."/.test/sink.lua")
+	--dofile(MP.."/.test/sink.lua")
 	dofile(MP.."/.test/source.lua")
 	--dofile(MP.."/.test/akku.lua")
 	--dofile(MP.."/.test/switch.lua")
diff --git a/oil/pumpjack.lua b/oil/pumpjack.lua
index 53d8518..04f8c05 100644
--- a/oil/pumpjack.lua
+++ b/oil/pumpjack.lua
@@ -55,7 +55,7 @@ local function formspec(self, pos, mem)
 	default.gui_bg..
 	default.gui_bg_img..
 	default.gui_slots..
-	"image[0.5,0;1,1;techage_oil_inv.png]"..
+	"image[0.5,0;1,1;techage_liquid2_inv.png^[colorize:#000000^techage_liquid1_inv.png]"..
 	"image[2,0;1,1;"..techage.get_power_image(pos, mem).."]"..
 	"label[0,1.3;"..S("Oil amount:")..": "..amount.."]"..
 	"button[3,1.1;2,1;update;"..S("Update").."]"..