Colour palette generators are pure luck. You keep pressing until something looks right.
I sometimes use a website that generates colour palettes. It's useful, but it's just luck: it throws out random colours and you keep going until you see something you like. There's no idea behind it.
So I thought it'd be cool if a tool could generate palettes from a theme instead, so "Seventies" gives you something that actually feels seventies. Then I took it a step further and had it pick the fonts that go with the theme too, a headline and a body pairing, so you get the start of a whole brand.
And if it's luck either way, it may as well look like it. For the container I wanted something funky, so it became an old-style fruit machine. It started as a fun idea, and it's ended up one of my favourite things I've made.