Sometimes color on signs look faded and are hardly readable.
In the screenshot I attached all 4 signs read "test" in the exact same color ("§f").
This seems to be happening in various versions of Minecraft (i have some screenshots where the problem exists as far back as at least 1.4).
The problem only seems to apply when the sign is facing certain directions (SOUTH and NORTH is what F3 says on the attached screenshot).
This is a big issue since it disables server owners to reliably use colored signs.
It was repeatably reported on various Minecraft Forums as for example here: https://forums.bukkit.org/threads/sign-color-fading.126097/
Sadly I have no way of reproducing it, it just happens randomly every so often and stays like that for some time, then vanishes again.
Of course, I was using a vanilla minecraft version when doing the screenshot!
Summary:
What I expected to happen was...:
Sign colors get displayed normally all the time
What actually happened was...:
Sometimes sign colors are faded out.
Steps to Reproduce:
1. Place 4 signs like in the screenshot
2. Wait
3. After some time (try logging into the world every few hours) the colors will be faded. I guess it won't happen if you stare at it the whole time, but i don't know.
Sadly it is hard to reproduce since it doesnt always happen, rather the colors start to fade after some time.
Re-Placing the sign does not help.