Choices are good, but too many choices are frustrating (paradox of choice?). Given a pool, randomly pick two and let the user decide on one.
Came up with some ideas, settled on Cull21 (Cull To One, since it's culling your pool of options down to one)
Coolors kicks butt. Spammed random for a while, got a purple I liked, iterated down until I liked the palette.
I whipped up a thing in Figma because I can't necessarily run Inkscape on my Chromebook very effectively. For type, I just somewhat arbitrarily picked Rubik off Google Fonts.
I wound up choosing Sinatra because Rails wasn't getting me anywhere.