Thing is, the focus right now is on red/pink. But that wasn't the actual problem, we've gotten sidetracked on this point when the real problem is making her feel Blood Moon and matching the rest of the skins cohesively. This is NOT limited to fooling around with the red/pink. The fact of the matter is that she doesn't look Blood Moon, doesn't fit in comparison to the rest of the skins, and THAT's the actual problem that we should be focusing on. A lot of it has to with the model itself and the character that was chosen (problems with skin looking to much like base, problems with clashing with particles), and the problems with color is a byproduct of that.
The Mask: For one many have pointed out how the mask looks more like I'm going to a ballroom/masquerade. It's the only Blood Moon skin mask that doesn't look like it would cover her whole face, that is not immediately recognizable as white, and that doesn't have horns. It just doesn't look like a Hannya mask at all (google images Hannya). Who knows, maybe had the original pink model had a way better mask, people wouldn't have gotten so fixated on it being pink. After all Kalista isn't red yet we can immediately tell she's Blood Moon. And there lies the other problem with the model . . .
The clothing . . . it doesn't have a lot of armor, the way shen/thresh/kalista does. The details get lost with those giant spider legs of hers and her posture - from certain angles it looks like she's wearing a bikini top instead of an oriental style dress. I'm not saying we need to give her armor, but because she's wearing a dress like Akali, and the details are getting lost, then this is why we need to rely on color to convey the theme of the skin. Which brings us to . . .
Color scheme As this and the rest of your posts show, the focus is on "some people don't like pink, let's change to red, oh people didn't like it, let's go back to pink, oh people are split 50/50 so maybe halfway between red/pink" all the while COMPLETELY DISREGARDING THE REST OF THE COLORS! If you change the the pink to red without considering how that red matches the gold and blue originally chosen to match the pink - then of course you're not going to get 100% approval on the change since it's an incomplete change. The rest of the colors needed to be changed to match accordingly. Personally I think the pink/gold/blue looks great. But it doesn't look Blood Moon! It's not just that you need more red, you need more white, the gold has too much green hue in it, the blue on the tips doesn't fit in. As I pointed out, you don't have the luxury of playing with the palette like you did with Kalista because the model doesn't lend itself to it. Which is why to really convey Blood Moon you would need to focus on red/white/silver-grey-metal the way Akali/Shen do.
TL;DR So please start experimenting with changing the color of her legs etc. and fixing the mask, and not just playing with variations in pink/red.