just testing...

table bgcolor=#ffffee cell bgcolor=#...
ffffcc ccffff ffffff 99ffcc ffff99 ffcc66
00ffff 00ffcc 00ff99 00ff66 00ff33 00ff00
33ffff 33ffcc 33ff99 33ff66 33ff33 33ff00
66ffff 66ffcc 66ff99 66ff66 66ff33 66ff00
99ffff 99ffcc 99ff99 99ff66 99ff33 99ff00
ccffff ccffcc ccff99 ccff66 ccff33 ccff00
ffffff ffffcc ffff99 ffff66 ffff33 ffff00
ffccff ffcccc ffcc99 ffcc66 ffcc33 ffcc00
ff99ff ff99cc ff9999 ff9966 ff9933 ff9900
ff66ff ff66cc ff6699 ff6666 ff6633 ff6600
ff33ff ff33cc ff3399 ff3366 ff3333 ff3300
ff00ff ff00cc ff0099 ff0066 ff0033 ff0000
ff00ff cc00ff 9900ff 6600ff 3300ff 0000ff
ff33ff cc33ff 9933ff 6633ff 3333ff 0033ff
ff66ff cc66ff 9966ff 6666ff 3366ff 0066ff
ff99ff cc99ff 9999ff 6699ff 3399ff 0099ff
ffccff ccccff 99ccff 66ccff 33ccff 00ccff
ffffff ccffff 99ffff 66ffff 33ffff 00ffff

also see - testing - colors - web - media - ecotech - stuff