alphaFill

The solid RGB color to use for filling in pixels with partial alpha transparency, as GIFs do not support partial transparency.

Set to -1 to disable filling.

The solid RGB color to use for filling in pixels with partial alpha transparency, as GIFs do not support partial transparency.

Set to -1 to disable filling.

The solid RGB color to use for filling in pixels with partial alpha transparency, as GIFs do not support partial transparency.

Set to -1 to disable filling.

The solid RGB color to use for filling in pixels with partial alpha transparency, as GIFs do not support partial transparency.

Set to -1 to disable filling.