1. Minor bug: Right now, the color choices seem to be be reset only by clicking OK to exit the Alt+K dialog. If using "/color background N" to change between white and black backgrounds, the nick colors don't reset. But if you open Alt+K and click OK without doing anything in there, the colors do get re-assigned based on the earlier /color command.
Thanks this has been fixed for the next beta.
There may be a few color combos that need to have a ban override.
There are no plans to add such a feature. If you can find a foreground/background color combination algorithm that works better than the current one, I would be happy to use it though.
However, one improvement which could be made is to eliminate colors in index 0-15 which have been assigned RGB colors too close to a color in the 16-98 range, as well as pruning some 16-98 colors very close to each other.
I should be able to add this to the next beta. In fact, it should exclude any color value that is already in the usable colors list, not just the color index.
Thanks for your other comments.
