I think a good addition to the toolbox would be a color picker. In fact why not have two different color pickers?
The first would be the full monty ChooseColor() dialog.
The second would be a dropdown combobox offering 16 basic colors. Borje Hagsten has again done all of the hard work for this:
http://www.powerbasic.com/support/forums/Forum7/HTML/000824.html
I've just implemented that Borje code into a project I'm developing and it works perfectly - a simple ownerdrawn combobox and it was implemented very quickly - it would be even better if it were on the FireFly toolbox so that you just dropped it onto a form.
Andrew
Just found this - Borje has also done the same thing as a listbox instead of a combobox:
http://www.powerbasic.com/support/forums/Forum7/HTML/000826.html
Andrew