Saddles textures color palette is different on every rideable mobs. For example, pigs, striders, camels, nautili / zombie nautili and ravagers have orange tinted colors, but for horses / zombie horses, donkeys, mules, and happy ghasts are brown.
And weirdly enough, camel husks saddles are a a sort of mix of both ? It doesn’t even fit its alive counter parts, camels.
This also include the saddle item texture, which is orange tinted.
They should be all the same color for every mob.
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We're tracking this issue in MC-248611, so this ticket is being resolved and linked as a duplicate.
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