Most buildings with multiple tiers and it's icon now are colored or have color highlights to match their tier. The aim is to make the buildings identifiable without being garish. Color hierarchy is the same as ShinyBobGFX. (Yellow, Red, Blue, Purple)
All current Angel buildings are included, though some minor changes are planned. Feedback is welcomed.
My other mods
Forum thread: https://forums.factorio.com/viewtopic.php?f=185&t=50153
Special thanks to Arch666Angel who didn't say 'No' when I asked to screw with his wonderful graphics.