Hi Max. I had no idea that watercolours could glow in UV! I have a UV torch (for checking landing patterns on flower petals, as well as the cat pee scenario so so discreeetly mention) so will shine it over my paint box (and paintings!) and see what gives! Super-cool. The glowing platypus research is recent, isn’t it? I knew about scorpions, when I vouluteered at the invertebrate house in DC they had a case of scorpions in UV light. Very cool. Yeah, I know what you mean about the “shaming” thing on social media. Its a pity the local company aren’t talking to you about the green paints, you’ve got on-the-ground experience of complaints that should be really valuable to them, Idve thought.

(Many animals are detectable with black UV. Scorpions and even platypus do. Other mammals do too like rodent, um, pee. You can also use it indoors to check if your cat’s peed where they shouldn’t and after you’ve cleaned it up to check your cleaning job!)

Ps don’t underestimate the importance of crimping tubes properly. My fave local brand’s specific green watercolour has had some serious batch issues with this at my local art shops. Can’t get in touch with the maker as they don’t deal direct with consumers so I’ve told my art shop staff to send their duds back to make the point. I’m too old for social media even if I thought the potential for social media pile on was a good idea for this local family-made-and-owned company right now…

Thank you Michael!