Colloquy ignores the chan founder and admin modes (q and a on unreal ircd) when given to any user in a channel after join.
If any user in the channel already had one or both of the two modes before using Colloquy to join the channel, Colloquy displays the user with the applicable and correct icon (like the green one for someone with +qao or +q or +qv, etc.).
If the two modes are given to or taken from anyone after join (be it to someone else or the user who just joined), it shows up in the console but fails to show up in the channel (i.e. like "Somebody was promoted to channel founder"), shows the icon for the next highest non-founder/admin mode, and changes the icon only when mode changes affect any of the other modes (op/halfop/voice): +q shows nothing, but +qo shows only the +o icon and not the icon for +q as it should, removing +o from someone who had +qov makes them show up like they have only voice.
This doesn't happen with any other modes (ohv), and was tested on three networks using the latest unrealircd (3.2.6). Not sure if it happens with other ircds.