Keep me posted dude, i dont like my plants too dark green generally, some strains seem darker than others but basically when i get shiny leaves i know my plant has reached max fert level, any more and i get dark green leaves and eventual burning.
Seems like we have slightly different ideas about the general green colour of our plants, i like a lighter green allover and never show a deficiency. Either way its gona be intresting seeing what the ferts do to your plants, i hope i am wrong anyway but i still think that second pic shows a healthy growing plant more than the first pic. My opinion counts for little so lets just see what happens, im sure others will agree to feed and im not saying for sure either way just it will be good to nail this down.
Personally soil fits into my everyday life better and is way more forgiving if i miss a feed or watering so i prefer it, wish i could run some hydro and rockwool but maybe one day i will have a go, as for now im loving soil so much and having some good fun in it. Good luck dude and keep us posted here, may help others in the future.
I do like your grows though, lovely plants normally and you got passion so rock on dude. Peace