This theme is inspired by the colors in the Sublime Text text editor.
Quite colorful (maybe too colorful, but I have started to like it).
This is the config to paste into the configuration file:
Sublimination:
# text colors
primary-text-color: "#F2F2F3"
secondary-text-color: "#A6E12D"
text-primary-color: "#F2F2F3"
disabled-text-color: "#E7DB75"
# main interface colors
primary-color: "#F92772"
dark-primary-color: "#F92772"
light-primary-color: "#60605E"
# states and badges
state-icon-color: "#5a583f"
state-icon-active-color: "#ffeb5e"
# background and sidebar
card-background-color: "#272822"
primary-background-color: "#4f484f"
secondary-background-color: "#4f484f"
# sidebar menu
sidebar-icon-color: "rgba(0, 0, 0, 0.5)"
sidebar-selected-text-color: "#A6E12D"
sidebar-selected-background-color: "rgba(159, 196, 74, 0.1)"
sidebar-selected-icon-color: "#A6E12D"
# controls
toggle-button-color: "#F92772"
toggle-button-unchecked-color: "#C4C4C6"
paper-card-header-color: "#A6E12D"
ha-label-badge-label-color: "#000000"
# for label-badge
label-badge-background-color: "#272822"
label-badge-text-color: "rgb(255, 255, 255)"
label-badge-red: "#A6E12D"
# derived colors, to keep existing themes mostly working
table-row-alternative-background-color: "#433d43"
It can also be found here: https://github.com/MikaelSchultz/homeassistant-config/blob/master/themes.yaml