Young Seedling Leaves Turning Purplish Brown and Curling Like an Upside Down Canoe!

My seedling is very young - only two weeks and the leaves are turning purplish brown. The leaves also curl like an upside down canoe. Not too sure why! It's grown outdoors in Florida temps and has good soil. What's the deal? Is it the strain? The strain is purple but I've never seen this before. Please HELP!

The pic looks all white. Hard to say.

Im guessing the nights are still too cold.