Sign colors appear extremely dark on all signs, whether using § or dye. It seems to be the case on all signs, but signs that have previously been colored before the most recent update have not lost their color. This makes them appear muddy at best and unreadable at worst. In-chat text is not affected. Examples of post-update color glitch compared to older colored signs from the same world during the same playing session are attached. If it makes any difference, this is on a realm, and my friend who is playing on iPhone was having the same problems.