I encode color alpha value as requested.
I think the change makes sense, however it is not backward compatible.
I suggest to keep the change.
> Added a background image. I like how it looks. But: It relies HEAVILY on transparency of node's
> Background. But there seems to be a bug. The alpha / transparency setting **is not saved** into
> .mm, so thats you have to do manually for now.
> Its only on ROOT-Node. Check it out after opening the .mm
> @Dimitry: Please keep a look on the Background button. It tries to display transparency (lol) but
> displays some weired characters and lines after setting alpha to zero.