I've been developing this site for a little while, and the theme has just sort of evolved over time. I wanted something minimal, requiring little design time and few assets, just a focus on pure CSS and high speed rendering.
My animations are all made with CSS keyframes, and the angled lines all from rotated divs.
The colour palette comes from the little logo (that a former colleague made for me), tints from that image are used across the entire site.
I'm really happy with how it's turned out, it wasn't something that I spent time planning, it just naturally came about through necessity and a little bit of visual pride.