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Pretty useful for me as a spriter to make sure noob spriters are not using a bajillion colors at a glance without needing to pop it into my art programs...
It'd be even cooler if the program could count and list how many unique colors are in an image?
Runs in 4 beta 11 with Nightly Tester tools compatibility override!
Useful for photographers as an alternate to histograms
Not sure what's it useful for, maybe analysis for image compression? still, fun :)
Maybe add mouse wheel to control cube size?