@substring I tweaked the old recalbox theme for crt to use with a custom UXS mix, but I lost the theme code. I still have the mix code, and I in process to adapt it to Skraper. It looked like this:
I want to test things with Recalbox Next to create a custom crt option and replicate that look. The only downside of this is some flaws on Skraper to create the mixed images, who are of better quality than the UXS ones, but with more weight and less info. But that's nothing to do with Recalbox.
Also, combination of 240p theme and 240p mixes is a possibility... Looks like you lighted a spark here @Substring XD.