This might help explain the non silver base color in your Indian AT's.
Specimens from the Indian subcontinent exhibit a dull grey-black base coloration, while Southeast Asian specimens have the characteristic silvery-white base (Schafer - Aqualog Brackish Water Fishes).
Specimens from the Indian subcontinent exhibit a dull grey-black base coloration, while Southeast Asian specimens have the characteristic silvery-white base (Schafer - Aqualog Brackish Water Fishes).

