I wouldn't worry about it, Louisianas are done for the year in most places.
You probably won't see much growth until next spring.
I have several hundred Black Gamecock and they look like yours, especially with the 107F days.
Try to keep the water level at root level or below the rhizome for best growth.

Spray with a half-strength dosage of Miracle Grow and they will green up.

Walter Moores

Thanks alot Randy, it's a relief to know that. I live in Asia and LAs are quite rare and expensive here but they are just irresistible. I will keep your advice on the water level in mind. Thanks again!

And thank you Walter for you info, Miracle Grow is not sold here. I will look for similar products but I think I'll just wait awhile before I give it any form of fertilizer.

Cheers :)