game-editor.com

Could we get additive to animations? That way we could make things look like they are brighter than it actually is. It will be good for fire and explosions.

I was actually wanting this function too. But for now, you could find a way to use canvas's

How do I get the effect with canvas?

If you were drawing the images purely through canvas (so you know have an array of each individual rgb value then you could do it) y could do all the rgb alterations you want. You can look into bmp loading on the forums. You could create a canvas as a layer above but you would still need to know exactly where to draw the elements of the additive layer. Another approach is to add an entirely white version of the actor (all animations). Then you can change transp and rgb to do the same thing.