I don’t know exactly where to put this, but I would love to see different color silicone socks for my hotends. I don’t care about the colors; I just want to easily sort my hotend for PLA & PETG, TPU, Nylon, etc. If I could keep a sock on my hotend in a specific color, it would be a nice quality-of-life upgrade.
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Henry Ford was a horrible human being, but his thoughts on color options are very applicable here.
Seriously, though, colored silicone hotends that don’t look like garbage after awhile is hard, pigments break down at certain temperatures, being able to offer many colors gets expensive real quick. Black is great, just add carbon black to the mix, job done.
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You may not care which color goes to which filament type, but there will be fights over it 
and complaints when some remember the colors incorrectly and swap to the wrong nozzle.
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I’m not really looking for fashion colors. I just want a quick visual way to keep hotends organized by material. Even black, gray, and red would be enough for PLA/PETG, TPU, and higher-temp materials.
Could also be something as simple as a colored band or marking on the sock if full-color silicone is the issue. Just something easier, I have nice little gridfinity inserts with labels, but they seem to end up in the wrong spot sometimes… I know that’s my error. 
There are some green ones available, you did not mention your printer model. Since they are light colored, you can probably write with a marker on them to indicate filament type.
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H2D/C - I will be ordering a set of these to try. Thanks for the link! I’m mostly interested in the hot ends for my H2D, I rarely swap the vortex hot ends as I run all my TPU and Nylon prints on my H2D.
“That don’t look like garbage after awhile” was what I said, and a quick bit of searching seems to show that they do, indeed, start to look like garbage with use. That ain’t what I’d consider red anymore.
Yes, that’s a well used one but it’s still very recognisable as red and still perfectly functional.
As far as looking “garbage”, I would consider a 3d printer as a tool not a showpiece, as long as the part is functioning as intended its appearance is not really that critical.
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Bambu cares a LOT for their industrial design.
These forums only really involve the engineers, but there’s a huge number of creative-type people that don’t check in here, who would notice and care about things like this.
The response to the “full spectrum” colour blend printing is a good example of this. Printer reviewers are just like “who cares? buy a roll of colour blend filament” and the creative people are like “look what I made now that i can precisely control the start and end points of a colour blend”. And of course each group doesn’t watch the other group’s videos.
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You could always use a high heat spray paint, tape it off and just spray the front or one of the sides. Rustoleum makes a high heat ceramic based spray paint that’s good for up to 2400° and comes in five colors. You probably only have to buy one can of each color you want in your entire lifetime.
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