Eh, it doesn’t sound destructive or interruptive to your day.
Manifesting isn’t just a new-age hippy thing. Ritual can put your brain in a certain space, and that can be a massive motivator for someone. Picking your socks to fit the theme isn’t all that different than telling yourself affirmations in the mirror.
It’s kinda like the “lucky shirt” concept. Sure, the shirt doesn’t really have some metaphysical power, but you’re putting yourself in the mindset of “Good things happen when I wear this”, and when you’re already in that frame of mind, the good things stand out even more.