Simple, but really nicely put together. Socks are colourful, easily discernible and varied enough to not feel repetitive from seeing the same design over and over again :)
Definitely not playable on touchpad, but you mentioned that the mouse is mandatory, so that one's on me :D
I like the little details in the background - coffee, plant, etc.
The only thing that stand out to me is music, I don't find it very fitting :)