Colouration of the Growling Grass Frog ranges from brown, dull olive to bright emerald green on its back, with brown, golden, black or bronze spots or lines.

Documents: 

Growling Grass Frog Fact Sheet

NCCMA 10430 - Growling Grass Frog Description and Characteristics

NCCMA 10428 - Growling Grass Frog Survey Notes