My RBTA came from a guy who had many clones and none of them had any green. Mine split several times and one of those times a split took residence next to a neon green toadstool. They're otherwise healthy just becoming green. I should note that the 2 green ones in the pictures below were manually split, however the original started becoming green from the side closest to the toadstool. It slowly spread through the whole BTA.
Here's a picture of one of the unaffected clones:
Infected RBTA:
Foot has random streaks of green all up and down the foot:
Here's a picture of one of the unaffected clones:
Infected RBTA:
Foot has random streaks of green all up and down the foot: