Filters, more specifically masks.
I'm sorry, but could you be more specific? I found how to apply a mask effect, however it seems to not have effect of what I needed. This seems to only modify the image below it and apply its transparency biased on the mask's transparency.
what I needed was something that could apply to another sprite like a decal or an overlay, so that it wouldn't lose its original texture.
I was able to make a "dirty" way of doing this However in the example you can see it would require a "mask" the size of the entire screen in any practical use.
I was hoping to have an option that could be used multiple times on the same object such as splotches of paint when they hit a target. the paint shows up on the target sprite but the wall behind it is clean.