Aside from wrong camo patterns, I think a lot of Raven's mistakes were compounded by monkeying around with the materials file. His red tulip 109K wouldn't be HALF as bad without the blacklight glowing white effect it has. I ran into something similar when I edited my B-17 material file. I think NRaven just went to town, and that affected how his colors showed up in the end.
(meaning a color just a bit off will look horribly off with the wrong materials.txt file)
I'd like to see a few of his redone properly, though. He shared my taste for some of the more colorful skins.