support for alpha channel in color tweens?

[hartbeatnt]

RGBA/ HSLA ? Or just RGB / HSL ?

[sasha240100]

@hartbeatnt As far as I know, alpha channel is supported in color tweening. If source/destination value have different alpha channel value - the output is going to be rgba. Not sure about HSLA support btw.

But in anyway, contributions are welcome

/ping @IlyaSenko