Here's a cheap and simple composite PAL color video bar generator made by Vassilis Serasidis.
http://www.serasidis.gr/circuits/colour_bar_gen/colour_bar_gen.htm
He used now hard-to-find AT90s2313. I decided to use it's replacement ATTINY2313.
Both firmwares on author's site are working OK as they are. I only had to use these fuses:
Great circuit!
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