How it should work:
Craft a computer* with dye to change its look (Like adding modems or other peripials to a pocket pc)
Use water to clear dye?

Purpose:
Differentiating between computers + Decoration

Additional stuff:

• Maybe restrict to advanced computers
  Maybe for pocket computers

As turtles are already dyable by rightclicking them with dyes it seems like a good idea

Whoops, just got the info that that was removed in 1.103.0, Crafting them seems good

Would tie in with #1348 pretty well! The advanced versions of monitors and pocket computers should probably be included as well for consistency, right? Feels like they match.

Should the ender modem also gain the ability to be dyed, considering that it's yellow currently? Current behaviour on a dyed turtle has the modem keeping its colour, regardless of the turtle's colour.

In regards to using water to clear the dye, would only a water bottle work, similar to how vanilla handles dirt & mud?

at the moment of posting i was thinking about computers and pockets getting dyed only, that could be a great addition

Yea crafting with a water bottle would undye it