My go-to for all color tees is: https://www.heavytshirt.com/ which wasn't in their lineup. I've been slowly turning all my other tees into rags as they get holes or stains so that I can replace them with heavy-weight tees. The quality is just ridiculously good, it can't be overstated.

This is an aside, but speaking of tee-shirts…. Does anyone know where to buy graphic tee-shirts for tall people? I cannot seem to find a Beatles tee-shirt in extra large tall size anywhere. Thanks.