Indeed. I'm very attentive. I always notice if my partner tries some new clothes, wears other jewelry, hairstyle or makeup. I love aesthetics and i appreciate it if she's putting in some effort. It's art. For nails i only care about fingernails since i'm not into any feet related stuff (had a footjob once, felt pretty good i have to say tho).
For colors i prefer light colors or neon. Babypink always get's my attention

not that much into red.
Lenghtwise she still should be able to do daily things

It looks fucking awesome if she spreads her cheeks with nicely done nails!