I've got a load of sprites etc. all drawn with shades of grey. I want to add different shades of colour for each level (e.g. blue shades for level 1, red shades for level 2 etc.), but can't work out how to do this.
I was hoping that I could just add an effect to a layer on top, and then this would affect layers underneath (kind of how layers in photoshop work), but I can't get it to work.
The color effect seems to just plonk a massive rectangle of colour there, and I'm not sure how to use it so that it only colours sprites with alpha.
How can I do this? Thanks in advance.