newbie question>>>

whats the difference between darker leaves and lighter leaves??
just curious b/c my bigger plant is darker and the rest are a lighter green.

i would say probably because some leaves block others from getting the same amount of light. or it could be a deficiency. check out all the grow faqs i'm sure you'll get different answers. it also could have something to do with the age of the leaves, older leaves look different from newer greener leaves.