Alright so what I'm trying to create is the lighting used in Roguelight
I may be way off but I've been using the multiply effect on two different layers, top one with the light sphere and bottom with the boxes, and the boxes have an additional multiply effect on them. This kind of works and gives this result
But what I want to do is have control over the color of the squares as now they are strictly black or dark shade, if I try to edit the sprite with a lighter color it just blends more into the background. Thanks anyone.