Viridian Vegetation

“What did you want to show me?”

“Come on in.” Henry picked up a potted plant and led Joanna to the living room.

She wondered if the avena grass was replacement for hers, that had caught a strange disease, turning all grey. Random gifts from Henry? Weird.

Odder still was the bat he retrieved from a cabinet. It was pale blue.

When Henry set the creature on the potted grass, it soon bit down close to the roots. Several blades started turning grey, while the bat turned viridian.

Henry shrugged. “I thought you wouldn’t believe me if I told you.”

Combining the prompts "vegetative" from Aldersprig, "viridian" from Becca Stareyes and "variable" from Tara Tyler. This follows the story Losing Colour