Definitely not just you. I loved DPaint, then later DPaint III. I would make cyclic animations using the symmetry tool and flood filling each section with the next cycling color.

DPaint III is where my animation skills took off. All animations where of a ball that launched off ski slopes onto trampolines, through conveyer belts, and other Rube Goldberg type contraptions.

I still have my A1000 in a closet. I should dust that thing off and see if it still works...

I did that a lot in Autodesk Animator on my 3/486. And it did palette cycling!

http://en.wikipedia.org/wiki/Autodesk_Animator

No, it wasn't just you!