hey yall, doing a first ever grow here, just had a few questions..:

My seed germinated just fine, and once i planted it in my soil (which i used a good mix) it sprouted past dirt and had leaves within 1 day

But the first leaves that appeared werent of normal shape (jagged) . they are just sorta round...is this the sign of any problem?
More leaves did come since then and they look fine.

After 2 days my plant is 1 inch tall im very proud of my baby

what kind of temperature would i wanna keep her in, right now its about room temp, little warmer cuz of lights...

Oh one more question:
my stem is more purple than green near the dirt, but gradients up as green and gets real green right by the leaves...anything to worry about this early?
i like purple BUDs but im not sure if that coloring this early is good.