Colored Grass

While I was making a Minecraft Map on MCPE for Amazon Tablet 8, This random square patch of grass became colored random colors, like red, orange, cyan, and other. When I digged it all, I realized that the regular grass blocks there had now become swamp and snow biome grass blocks! Very weird. And when the dirt under the now dug blocks became fertilized, they were the exact same colors in the exact same pattern!!! Any grass blocks placed on top of the colored blocks were the exact same color as the ones under them, but if I placed a grass block outside of the square, it didn't have an alternate color. Any tall grass and grass placed on the oddly colored grass blocks had the exact same color as the oddly colored grass block under it! When I got off the world and got back on, the oddly colored grass block patch was back to it's regular color, green. I still thought this was worth reporting. I found no mentions of it except when it was briefly mentioned in this article linked in the URL below.