Random stained glass script
Windows batch file:
https://pastebin.com/MQSWtQpy
Linux shell script:
https://pastebin.com/40z3SK5Y
Pros: Non-deterministic, Twitter can't simply apply our common overlays to their blacklist set and add the results back into the blacklist.
Colored overlay. Cannot be countered by setting the sniffer to ignore tone variation.
Cons: Need to install a dependency (Imagemagick)
Command-line tool. Most memers are graphical and uncomfortable in the command-line world.