Forge
Default: Thick Wings.

= THIN WINGS =
1) Drag everything located in "Textures\16x16 (default)\Forge\mob\Thin wings" into "butterflies\mob" located in your minecraft.jar

= THICK WINGS =
1) Drag everything located in "Textures\16x16 (default)\Forge\mob\Thick wings (default)" into "butterflies\mob" located in your minecraft.jar
