I thought the season had already ended. I'm glad I read this, now I have something to look forward to.
For Handcent you have to open a conversation with the person you want to personalize the notifications for, then click on the little person/gear icon...
I got my Droid replaced today due to small spots (dead pixels or dust under the screen or something) and I can't figure out how to change the colour...
I think it's pretty tight.
I always get all three.
Separate names with a comma.