The game uses traditional colors for chip denominations:

Red chips are worth 5 units.

Green chips 25 units.

Black chips 100 units.

Purple chips 500 units.

Yellow chips 1000 units.

The Winter Solstice Fairie was kind to me, and new chips are in rotation.

If you are looking to buy chips, I like the chips at BR Pro Poker and Apache Poker Chips.

For ludicrous prices, but clearly worth it, Classic Poker Chips is the company that made all of the chips used in Rounders.