Leaves bright green

Continue with "grow" nutrients for the next 7-10 days, dropping the "bloom" nutrients altogether for this particular plant, and it should green up again, before then going back to bloom nutrients. Cannabis still needs a fair amount of nitrogen in early flowering, and dropping the "grow" nutrients and switching to "bloom" nutrients too early can lead to premature yellowing quite early in the flowering cycle. Personally, I continue with grow nutrients for the first 2 weeks of flowering, before switching to half grow and half bloom nutrients for the next 2 weeks, before then switching to straight bloom nutrients through to maturity. This seems to produce the biggest flowers on plants that don't completely exhaust themselves and end up looking a sickly yellow colour from top to bottom. Hope this helps, Organoman.