For example, if the colour set in the paint mixer is "#00FFFF", it will be incorrectly shown as "#FFFF". The hex code needs to be zero-padded to 6 digits.

To help anyone who wants to fix it: The line you need to modify is here.

I'd do it myself, but apparently your building instructions massively oversimplify things because this is next to impossible.

Just make a pull request and let Jenkins take care of the build process.

@teamvista I don't know enough Java to do it without testing, unfortunately.

Wouldn't say "massively oversimplied", only two pretty basic commands more. Anyway, updated README