my leaves are yellow-green. I wouldnt worry, but isnt yellow usually a little bit bad? should I feed them my mexican bat guano yet, they're a week old and I haven;t fed them anything yet. the temp. is usually between 72 and 80 degrees, and the lights are on 24/7. I included a picture of the one that i'm worried about, but im sorry its super low quality, i had to take it with my phone. The other ones i guess are yellowish green, but not to the point where i would worry about it yet. thanks a lot.