There's orange for joycons on AliExpress.
I'm not seeing any system shells though.
It seems to be clear, smoke, glacier, purple, blue, red, green, pink, a greenish yellow, and a tealish color. All of those colors are the transparent colors.
All of these are made in china, so you'll want to check china sources. AliExpress is the easiest to buy and order from if you're anywhere in the West.
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