Artcyclopedia
searchable database of all things ART...

artnet
on-line artist's community...

zeroland.com
comprehensive art portal

Hype's colour specifier
colour table showing common colour names, as well as rgb and hex values...

Webmonkey
the web-developer's resource...

BuddhaNet
Explaining the symbolism of the mandala...

Mandalas
Cornell University's mandala page, with various related links...