When walking through biomes, the colors of blocks will change. Grass and plant blocks will turn bright green, and all other blocks will turn white. The blocks will glitch between this state and the default state at a rapid rate, but sometimes at slower rates.

I have noticed this effect mostly in Jungle biomes and biomes with snow, but I have also seen it in Mountain and desert biomes. Attached are pictures of a desert biome experiencing this effect.

Occasionally, hitting F2 while this glitch occurs will crash the game, but a crash report will not generate.

I have experienced this effect while using texture packs AND while using the default texture, so I am assuming it is not a matter with that.