Yeah, that's why I never use opposite colors, especially red/green...too Christmasy. Blue/orange and purple/yellow look too much like something you would see on a SeaDoo, dirt bike, or monster truck. Did you try the split complements? They only work a little better, shrug. Red with blue-green or yellow-green. Or Green with yellow-orange or red-orange. I might try an amber or tan with that red...won't look good on antique maps, though.