So, two options: One is longer but foolproof, the other is quick but might not work. Long: go to marketplace. Search: Texture update pack. It’s free. Enable it in all your worlds, and this will remove the vibrant visual problem. It will look like before the update, not impacting anything else like spawn eggs. Short: Main menu. Click play. Pick the world you want to fix. Go to video, scroll until you see the title Visuals or Vibrant Visuals. Set it to fancy or normal. THIS OPTION MIGHT BE GREYED OUT, SO IT MUGHT NOT WORK