CHOYBOY  Excellent little program, cycles through all the primary colours plus black and white. All you need to test your LCD for bright dots or dead pixels (many LCD manufacturers have 30 day zero bright dot policies)

Also free which is what you want for something you may only test once every few years.

Would be nice if this was ported to intel though. Takes a while to launch on startup.  
(Version 1.2)

CHOYBOY  I hate to say it, but ROMEO also has palm support via Veta Universal for palm - for $5 less, with much better technical support. I reported a bug and it was fixed in 2 days! beat that. I'll write a reivew of Salling once I've tested it more thoroughly.  
(Version 2.0)

DAVE CHOY  Finally! An answer to (some) of my prayers! This program does what it intends to - allows me to usefully control my mac for my palm, just like Romeo on its own does for the T68. Haven't used it too much yet, but it seems to do the trick. Lose some points for skimpiness on the trial period (about 5 clicks and its useless without registration!!! How tight can you get!), but still a much needed program. If anyone is listening, would also like to see a program that allows chatting between macs via bluetooth....  
(Version 1.0)