My plants do that it just grows so fckin fast lol every morn after lights out I gt new growth that colour within 2 hours of lights on it normal colour
i agree, all new growth comes in lighter like that and will darken up.. that does look a bit on the lighter side, but i think they look fine.. all of the older growth looks great, like has been said, that's where you usually see def. like nitrogen start first..That's not N deficieny, N will start with the lower leaves first and work it's way up.
Need more info but it looks to be just new growth is all, new growth will always be very light green.
If you haven't fed her then give her a good NPK and see if she changes any, start small and work your way up...
Score! I just saved this pic.. Excellent info..Here ya go this will help...