Bleach white shrimp, different species?
Shrimp skin color depends on the presence of several pigments, the main ones are blue and pink carotenoids. That make shrimps to have a wide variety of shades depending on the subspecies, feeding, location, etc.

When cooked, blue carotenoids dissapear, leaving just the pink pigments wich transform to orange shades.

The final color of the cooked shrimps depend on the original pigments.