The three RGB LEDs show hours, minutes and seconds in hues beginning with red, and ending with violet. Unlike the old 1980's ChromaChron watches, whose colors were not in rainbow order and included such atrocities as BROWN (I mean really, do you ever want to say "It's brown o'clock!"?); the PrismaChron uses light and Rainbow-Brite-approved correct rainbow hues to cheerfully help you pass the time.
This product is currently in its fundraising stage, so please help support it so that it can become a reality. For non-electronics-geeks (like me), they'll even assemble it for you! Yay rainbow clocks! :)
Tindie Fundraising Link: