Currently, the plan is to have pink, green and grey, then choose 1 color from blue/purple and 1 from orange/yellow. If anyone has a problem with that, feel free to speak up.
Would you rather have yellow or orange? You can see the various shades in this Matsui color chart posted by ott in this thread, but keep in mind the actual chips might look a little different:
http://www.chiptalk.net/forum/viewtopic.php?t=49
(look about halfway down the page)
yellow:
orange:


More color samples:
General info (for people new to the buy):
This group buy is for non-edgespot Matsui clay chips. They will be non-denom, probably 5 colors (either “pastel” or “bright”) with a black inlay and simple design. A custom mold is also being considered ($2500 for a custom mold). We do not know what the price will be yet, but early rumors are that they will be around $0.50 per chip. Minimum order is 5000 per denom, 50000 total order. We do not have a timeframe yet for these chips, but we will try to keep everyone updated as soon as we know anything.
For more information about Matsui clay chips, see TenPercenter’s review here:
http://www.chiptalk.net/forum/viewtopic.php?t=812
ACEPokerchips will be handling the actual order with Matsui. He will be adding custom plaques to the set, and is also considering adding a denominated version of these chips.