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I figured that since there's a post for what trade skills people want that already exist, we could talk about what trade skills people would want to get into in the future.
I have a few ideas, but one I'd really like to see is dying. The kind that lets you stain your clothes with a scarlet red and helps you match better with your tragic lover.
Dyes would be relatively simple, probably just a bunch of pre-set dye colors like there are inks. It might be cool to let players invent new dyes, but I feel like that shouldn't be the main point here, so if it is possible, I'd rather people pay tremendously for the act of invention rather than introduce a licensing gate fee to its possibility.
Each dye would probably have a few synonymous color words, maybe four at the most, to allow tailors to not have to worry about their color words sounding repetitive.
Each piece of clothing (and maybe jewelry as well) could then reference a different dye. There could be up to like three or four dyes per clothing so that you can have your white robe come with a black sash and a red hem. Ideally, current clothes could be redesigned to use these color references and become dyable, but nothing will stop tailors from specifically making a white shirt - indeed, they could even make a white shirt have dyable sleeves, if they wanted.
This would help tremendously in letting players color coordinate better. Have you ever found a shirt you really like, but it's in a color you would never wear? If the designer let you, now you could dye it. I imagine most designers would make most of their clothes dyable, with things like uniforms or custom work being exceptions.
Color references would probably more or less work like player references in emotes do, like $1 could be color #1, $3b could be the second synonym of the third color, probably something for capitalization, etc.