Light green colors in young seedling leaves

Hello.. Hope you are well.. Tbh ur pics of her in the sun look healthier than wen in shade.. Id personally put her bk wer she was.. She clearly liked it more their.. U soil shud av enuf food n i think the yellowing is either its too cold/not enuf light or its vert old depleted soil (id believe cold/light change).. U can keep seedlings in the sun.. Of course u can or how wud they grow naturally?!?!.. 😁.. Ideally its common mistake to place babies in green house or propagator in sun and its obvious too much heat that kills them off.. Ur girl will b fine in the sun.. Dont get her leaves wet during daytime and b mindful of waterings.. Best of luck to u n stay safe.. 👍🍀

I'm very very inexperienced but I've studied growing techniques in great detail and I really can't see a problem with your seedling apart from parental jitters on your part lol. It looks super healthy and new leaves are a pale green/yellow and that's to be expected. Your restraint is admirable because not doing something is often better than taking action. Anyway good luck. I've just started my first grow so don't take my comments too seriously I could very well go on to kill my own lol

Hi buddy. How high is your ec and your watering behavior?