Here's the list with probably a few repetitions, but I've tried to avoid numbering an entry that had been repeated. I also edited out a lot of commentary. Just thought this might be of use if anyone wanted to copy the entries.

The List:

1.shading
2.tone
3.tint
4.fading
Jackie
5.redden
wwh
6. blend
7. tincture
8. complexion
9. timbre
wow
10. lighten
11. darken
12. negativize
jazzoctopus
13. brighten
14. dim
15. Does convert to grey scale count, or is there a single word for that?)
16. sharpen
17. dull
18. highlight
19. enhance
20. clarify
21. muddy
22.Shadow? 23.wash out? 24.make translucent"; WW screwed up the numbering here; sorry26."make opaque"?
I won't count redden, 27.blacken, 28whiten, since Dr. Bill has made those easy.
Keiva

How about 29.incarnadine,30.empurple,31.iridesce,32.blanch,33.jaundice,34.blush,35.flush,whiten,blacken,36.green (as in environmentalists "greening",37.blue (as in blue a gun barrel) 38.brown (as toast) 39.pale,40.grizzle,41.bleach,42.dye,.....
wwh
43.stain, dye, 44.paint, 45.marble, 46.splash, 47.woad
48.color, 49.discolor [heh]
50.infuscate (darken), 51.scumble (soften), 52.countershade (lighten/darken), 53.embrown (tan), 54.rubrify (redden)
55.embrown and 56.empurple
tsuwm
57.Pigment (v.); 58.pigmentation; 59.iridescence; 60.phosphorescence
WoN
61.floresce
62.luminesce
wwh
63.saturate/64.desaturate, 65.dull(v.), 66.opacifiy, 67.wash out.., 68.flop(n.) is used for paints (e.g. on cars) which change color according to the angle of sight
wsieber
I confess to backformations, scraping bottom of barrel.Stretching things a bit:
69.pink,70.tan,71.fade,72.sallow,73.inflame,74.stripe,
75.ensanguine,76.clarify,77.freckle,78.cyanose,79.glow,
80.luminesce,81.irradiate,82.fluoresce,83.scintillate, 84.coruscate,85.opalesce,86.exsanguinate,87.wan, and as a joke, 88.litmus - chemical test, changes color with pH.
wwh

I'll offer: 89.dapple/dappled 90.brindle/brindled 91.mute 92.intensify 93.deepen 94.pointillistic
95. bleed/bled/bleeding (of oils) 96.glitzed 97.neon (colors changed to) 98.hot (colors changed to) 99. smoky (of various colors, e.g., gray, white)
100. inumbrate/inumbrated 111. to blue (as of fabrics) 112. to tiedye 113. to gild 114. to bronze 115.patina

Best regards,
WW