I actually saw Totally 2.0 recently over on Imperfectly Painted and knowing that it was lurking somewhere in my stash, I knew I had to pull this out and wear it before the summer was over. Totally 2.0 was a polish from last summer's 80's Baby -- All Grown Up collection, which was a revamp of neon shades that had been previously released. Totally 2.0 is supposed to be the yellow of the group, but I would describe it was a "lime-green lemon" (taken from one of my kids' books) because it's a yellow with a strong green tone... or a green with a strong yellow tone? Either way, it's neon yellow/green with a golden shimmer to it.
Totally 2.0 had a formula similar to Psyche, but slightly better-- it's a touch thick but easy enough to control and apply. I used three coats and was happy; you might be able to get away with two careful coats. Totally 2.0 dries down to a matte finish, so you need a top coat to really bring out the shimmer.
Totally 2.0 does not disappoint! Yes, the formula is not perfect, but I love the color so much (gimme all the shimmer!) that it makes up for the slight formula issues. I also really like the funky yellow green color going on here; it's just awesome! This might be my favorite neon of the year, even though this was released in 2015, hah!