Leg Rings

Might sound like a stupid post, but as a careful hobby breeder, I am trying to establish a simple method of "ringing" my birds proginy. Just trying to keep better track of them, so that close inbreeding is avoided. I have tagged my two breeding pair with separate colors at this stage, and just wondering how to follow up. I have designed my own breeding charts on my computer using Excel, so bird colour wise I should have no problems. Any help would be great appreciated, thank you.