Mash's hair is typically lavender I believe. Different artists drawing her might draw her hair more pink or more purple, artistic interpretation and all that, plus it also depends on the artist's style/shading/coloring as well. There's also a lot of official art of her that's drawn by numerous different artists, as they will often hire guest artists. Which is something I like, since we get to see a bunch of different artists making official Fate art. For example, Lam did some official art for New Years Mash .
^Eh I wouldn't say "useless" more very niche. I'd level and use her mainly to have ship comps with her and Gavial for fun. Luckily a lot of Arknights content is pretty manageable with operators that aren't meta/high tier in gameplay.
That aside, I hope to see a bunch of art with these two, as I really love their ship.
It was a yuri bait and switch. Explicit declarations of love, sweet words, longing, passion, presenting themselves for each other, a lot of eye-fucking like the above...
It's insane to me that you can simultaneously say that a show has "Explicit declarations of love, sweet words, longing, passion, presenting themselves for each other, a lot of eye-fucking like the above..." but also contend that it's not yuri.