Robin Powell
Robin Powell is credited as colorist on 19 issues in grailworth's catalog, 17 issues of them across 4 series we value.
Every issue
The Goon (2002) 3 issues
The Goon Color Special (2002) 1 issue
Hellboy: Weird Tales (2003) 1 issue
Credits from the Grand Comics Database, CC BY-SA 4.0.