both of my cars are a dark grey with metallic flake

I`m a bit of a tactical flashlight guy and have some nice LED lights. They don`t seem to help at all, even when held at 45 degrees. I bought a cheap worklight, which doesn`t seem to help. I try it in direct sunlight, which gives the best results but when I can`t work.

does anyone have any suggestions, tips, tricks for a dark paint like this before I spend big money on Scangrip stuff?