Controlling Background and Foreground Elements by Netscape
Thalia's Guide: The Color Page by Mark Koenen
No Dither Netscape Colors by Victor Engel
Through the 6x6x6 Color Cube: An Interactive Voyage by William I. Johnston
The 216 Color Cube Background Maker
Custom Color Resources by Stuart Moulthrop and Nancy Kaplan
Background Colors by InfiNet
The Color Specifier by HYPE Electrazine
RGB Color Charts by Doug Jacobson