The Vibrant Visuals option in Video Settings is greyed out, and does nothing when clicked. I enabled the "Vibrant Visuals" toggle in the Experimental tab in the Create New World screen, yet it doesn’t work. I have made sure my computer supports it, and dxdiag says the machine supports DirectX 12.
Minecraft requires Intel graphics drivers version 31.0.101.3430 and above to run on DirectX 12. The latest graphics driver for your GPU is 31.0.101.2135, so you will not be able to use Vibrant Visuals.