I do have some suggestions.
A hotkey to quickly toggle between showing the custom chat effects and showing the default chat would be nice.
If you havent already, add mod/moderator tags if it's possible from the client side. Most moderator add-ons I've seen use isMod or isModerator.
Also a separate chat box for deaths would be nice. Perhaps let players pick what position the chat boxes are, at the bottom left above the paint can stuff, at the top left, or at the top right next to the inventory.
What I'm going for is using the default chat location for death messages only and put chat above the paint can to try to replicate garry's mod or other source engine games/mods
Looks real cool though, gonna be downloading this and checking it out. How compatable is this when servers screw with the chat system in their own way?