When looking at my plants compared to others mine ...

leaf color is tough to tell under a grow light. the alwas look a bit paler under most lights and simply due to how much light even if warmer or cooler CCT. don't take a leaf off specifically to do this, but anytime you prune leaves in future as need arises, always good to look at them under normal light. and, as long as these are small and mobile, can always check them out once in a while early on. These look like happy plants. possibly getting darker from the progression on pict 1 - pict 2 in your 2nd week. (pic1 is same as pic1 in week1) either way, could be a little high on nutes, specifically Nitrogen. you don't have any clawing or other symptoms, so don't react too much. small adjustments are the way to go when allowed.