Add bug notes categories and colors

[nouklea]

Hello,

I am looking for a way to categorize or classify bug notes. I would like to add a checkbox to the note section to specify if the note has a specific caracteristic. Then, in the CSS, I would like to specify different bug notes colors. I have seen this post viewtopic.php?f=4&t=22625&p=55985&hilit=color#p55985 that links different colors to the access levels, but I'm note sure how I could use it... Could someone guide me with this customization?
Thank you very much for your help!