Every now and then there's a theme that just has odd color swing. Of course it's nowhere near as bad as it was in the early days but it can still be disappointing. I don't know if something like this would be possible but I was thinking it'd be neat to have a philter that can be used on themed pets to "reroll" the color swing it has. So it will still have a swing like before but it's just a redo. I don't think it's something that could be abused since it's still random but at the same time it could be a useful philter for people to purchase from the site.

Edit: Turns out this is actually a thing! I somehow missed that dyes can be used to do this. Just dye a themed pet a color and then you get an option to change it to it's proper modern colors. Of course if you have an old version of a theme with alternate colors then this would not work unless you wanted the newer color set. Also this would not apply to pre-tag themes since they're not tagged.