Im not colorblind, lol and I use the ph juice and I'd never run my nutes that ph at 7 with that bluegreen shade, lol. Try it and see, lol. You really have to watch what you see on IG, I see somone today putting ice like a top dressing on their almost finished plant, Im sure that's a new idea someone come up with that looks a lot better on paper that in actual reality. Oh yea, it must be to stimulate a frost situation, lmfao! One of those theory things, lol. IMHO if you are getting better looking plants running your ph at 7, there is something in the medium you use causing this, but jmho