Different Flashlight Colors

[42Tobias42]

It was implemented in #633 but I want to reiterate on it.

I was sailing recently and a was searching for a red flashlight.
Different to #633 I was trying to change the color by long pressing the active flashlight screen.

I think that in combination with an indicater what color mode is active, when the flashlight is turned off would come in handy.

[NitroNils]

Or a global "night vision" mode, as has been discussed earlier.