GTKD - overrideBackgroundColor of Button doesn't work

[TheDGuy via Digitalmars-d-learn]

On Wednesday, 15 June 2016 at 22:34:05 UTC, Gerald wrote:
> snip...
>
>> The text color is green but the button background color is 
>> still default-gray!
>
> I don't see an obvious issue with your code, I usually use CSS 
> classes personally and I know that works fine because I use 
> this technique all over terminix. I would suggest using the GTK 
> Inspector to debug the CSS issue, it's an awesome tool for 
> figuring out GTK CSS issues as it let's you change CSS on the 
> fly, see what CSS is being applied to an object, etc. You can 
> see how to use it at the link below:
>
> https://wiki.gnome.org/Projects/GTK%2B/Inspector
>

Do you know if this works on windows?

> Personally I just add and remove classes as needed:
>
> getStyleContext().addClass()
> getStyleContext().removeClass()

So you basically have to create 2 classes? And what would you do 
if you would have to change the color randomly (for a simon says 
game)? I still think it is a bad idea to claim the way with 
function calls as deprecated but introducing a new system which 
is not as flexible (but maybe more powerfull).
C# with Visual Studio does it, PyQT does it: Function calls.