Fix various template warnings (#32)

- Missing :
- Deprecated =
- Not valid color name
- Must always return statement

data/magic-future-split-facing.mse-style/style

@@ -777,7 +777,7 @@ extra card style:
 		visible: { card.pt_2 != "" }
 		render style: image
 		image: { flip_ptbox2() }
-	paintbrush
+	paintbrush:
 		right: { ( if card.pt != "" then 195 else 241 ) - card_style.illustrator.content_width }
 		top : 334
 		width: 25
@@ -797,7 +797,7 @@ extra card style:
 		angle: 90
 		render style: image
 		image: {if styling.overlay == "" then nil else styling.overlay + "/overlay.png"}
-	paintbrush 2
+	paintbrush 2:
 		right: { 492 - card_style.illustrator_2.content_width }
 		top : 334
 		width: 25