@созерцатель - No worries. I did notice that I forgot to adjust the values of the old bird leather though, so I fixed that as they should be worth the same as old lizard leather. It's all sauropsid when harvested, but seemed a bit weird the old stuff didn't match.

The darker colour is to distinguish the two, given old bird leather can not be used together with old lizard leather, due to game limitations

Ok, thank you

@созерцатель - Yeah, don't worry about that. On new games, it's not gonna make any difference, as the darker version does not exist. Butchering birds and lizards will only produce the lighter sauropsid leather.

The darker sauropsid leather is the old bird leather category, which exits here for the sake of preserving existing stock in old saves The result is having this duplicate category in production stations, but it can safely be ignored.

The alternative was to use the same method OC did, but that results in a huge loss of stock, as the "dummy" leathers are worthless.

Thanks for your work. For some reason I have 2 types of sauropsid leather in bills and stockpiles. They are identical but have different colours. No other mods. Sorry for my English.

nice