There's a file called "adom.msg" in your /adom_dat folder (Windows machine). In it you can adjust colours of different statements (so stat drains and critical hits show up red, say), and suppress others (Arena/ToEF spam) entirely. I think there's a tutorial on how to use it in the readme, or you could probably just grab a reasonably well setup one from someone (eg. the one on the server) and use that.
Hoping to win with every class, doomed. Archer, Barbarian, Bard, Beastfighter, Druid, Elementalist, Farmer, Fighter, Monk, and ULE Priest down.