Possible Clues:

• Hand-colors, hippie-style
• Adds color to, in a way
• Retro tees
• Colors, as a Grateful Dead shirt
• Makes retro T-shirts, perhaps
• Colorful shirts
• Makes a colorful camp T-shirt
• Stains must be linked of course
• Patterns on textiles being drawn certainly
• Makes costumes for 'Hair,' perhaps