Is'nt there a paint recycling place near you? A couple of years ago someone here in NZ started recycling paint & dirty paint tins.
I think they dried it out & obtained the pigments & then mixed that into a new paint. For some reason I think they also recyced photocopier toner at the same time.
Oh, here>
Resene PaintWise Recycling of Unused Paint
Just after they started selling it, there came a fashion of painting houses & fences a light/mid grey or brown colour... yuk. I think that was the recyced paint.
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