Icon option for disabled

[LeonardoSousa20]

Hey guys, do you think it would be viable and interesting to insert an icon option, in addition to check, uncheck, an option for disabled?

[jakezatecky]

That is not a bad idea. The current mechanism reduces opacity of the checkbox, but that may not be acceptable for all circumstances.

[kundansable]

@jakezatecky I also need option for disabled icon