GlitterNova
Two decks that I have that use color in interesting ways:
http://www.aeclectic.net/tarot/cards/fairy-lights/ (a lot of greens, blues, teals and icy greys)
http://www.aeclectic.net/tarot/cards/tarot-of-the-spirit/ (the scans REALLY don't do it justice)
http://www.aeclectic.net/tarot/cards/fairy-lights/ (a lot of greens, blues, teals and icy greys)
http://www.aeclectic.net/tarot/cards/tarot-of-the-spirit/ (the scans REALLY don't do it justice)