It'd be nice to be able to just hilight specific controls with a red box (like WinID does).
Something like this looks like it'd work well:

    http://www.donationcoder.com/Software/Skrommel/MouseMark/MouseMark.ahk



But it'd also be nice to be able to draw a red box anywhere with the mouse also.




http://www.autohotkey.com/forum/topic7378.html&highlight=draw+mouse