Color selection module

For a small website I need the following color selector: 20 given colors defined by hexadecimal values (and separate corresponding alphanumeric values) should show up in a node form. The user who produces the node should be able to pick one of the 20 colors. Once the node is saved the color should show up on the node. The colors should also show up on a views exposed filter. The admin / user1 should be able to specify the colors together with its corresponding alphanumeric value. This module should be developed for Drupal 6, ideally as a cck 3.x module. The views api is 3.x. You have to develop the module on your own webspace / server. You are allowed to publish this module later on at [login to view URL] - naming me as a sponsor. If you have any questions let me know