For color maybe you don't need a compressor, just something like the:
The Culture Vulture THERMIONIC CULTURE ALL VALVE DESIGN PROFESSIONAL AUDIO EQUIPMENT.
If you do want a compressor with color check out the
The Phoenix (i little more then $3k)
THERMIONIC CULTURE ALL VALVE DESIGN PROFESSIONAL AUDIO EQUIPMENT
OR I'd personally go for the
API 2500, API 2500 Stereo Compressorvery flexible and has a nice tone.
Others;
Avalon VT-747SP Avalon - NEW VT-747SP, Specs & Details and the
Pendulum Audio OCL-2 Pendulum OCL-2 Tube Compressor/Limiter