Strange pattern and coloration of cannabis seedling

That first one is a concern, the 2nd one is not. If it doesn't grow out of that wrinkly leaf shit, it's probably a dud plant. Still a chance you don't see that after a few nodes of growth, so don't trash it yet. In my experience, that 1/50 or 1/100 plant that looks like this never ends well. It's either a disease or some hindering genetic mutation. The 2nd picture just has typical pigmentation blemishes of early leaves.. i doubt you see it much after the first couple sets. And if you do, still not a problem. Time will tell soon onthe first picture.