Garment dyed items should ALWAYS be washed separately before wearing to avoid any bleeding issues.
Due to the naure of the dyeing process with pigment dyed shades, loose pigments may remain on the surface of the garment even after the first wash. We strongly recommend ashing these garments only with like-colored garments as some of the pigment dyes may stain light or white colored garments in the wash cycle.
Washing the garments in cold water will reduce the possibility of staining. Shade variations are inherent in the garment dyeing process.
We also suggest you hang to dry...the shirt, not you silly.