Latest Stable OpenComputers Version 11/26/16The latest released version of OpenComputers is version 1.7.2 for MC 1.7.10, 1.10.2, 1.11.2 & 1.12.2. See more information here! Beta/Dev builds can be found at the Jenkins Build Server (ci.cil.li)
Color codes aren't terribly difficult: it's broken down into 3 section, red green and blue. Each section gets two characters, and those characters are hexadecimal - FF is hexadecimal for 255. So FF0000 would be entirely red, 00FF00 would be entirely green, and 0000FF would be entirely blue.