If I accidentally hit the ‘3D Anaglyph’ option in settings while in the main menu, it’ll alter the colors to a more dull version which requires me to have to restart the program in order to fix the colors. This is shown in both the multiplayer (MOTD) and single player menus.
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@pokechu22 It isn’t the intended cyan/red colors that make the game look 3D, it makes the colors dull after the 3D Anaglyph option is disabled. That is what forces me to restart the program.
The change of colors is intended (as otherwise, pure-red chat wouldn't be readable on one eye). But it doesn't actually work that well, as it doesn't trigger until a restart, in either direction (which is why I can say for sure that pure-red chat doesn't work well without changed colors; it's unreadable through my 3D glasses).
Since you're most likely encountering this through the freeze you're experiencing (MC-121216), which forces you to restart the game once, the color change already happens one way for you.
MC-43991.describes the need to restart the game for the colors to change.
Thank you for your report!
However, this issue is a Duplicate of MC-43991.
It's intended that anaglyph changes the colors (for reasons of making things visible with 3D glasses). However, the color change doesn't actually happen until the game is restarted, which is what MC-43991 describes.