I took a CVS snapshot, and what I could say :
1. USE THE LABEL !
<input id="foo" type="checkbox" />
<label for="foo">Deactivate BBCode in that post</label>
Clicking on the text will select the checkbox. (works on ie, fx, opera).
What I would except, is to find this in the post form. It is in the ACP, but it miss there.
2. Disabling colors, size.
What I would except (and what I will do for sure when final release will be available) is something to disable colors - either at user level, or at admin level -, so that the user won't have white text on white background.
Also a set of predefined (from x-small, small, etc) size and colours could be better.
3. use class, not style attribute, nor <font />
It would be better to have an option to select a CSS class instead of a color when we want to apply it on the group. The advantage is for template.
Appart from that, the work is awesome
I hope I will be able to make some mod (like filter, and [Solved] checkbox for some topic).