These are pre-packaged and somewhat tested themes. Provided you don't use a broken version of spicetify, you should be able to at least use spotify with these themes installed. Some of them won't necessarily look good due to mismatched and out of date versions (see the warning in the README).
All of these themes can be found here.
Identical to the default look of spotify, but with other colorschemes available.
Grey and orange theme using the montserrat typeface.
Flat design, with lots of thick line borders.
Modern, rounded, and minimal design, with fading effects and gradients.
Monochromatic colorschemes with subtle differences between colors, and soft vertical gradients.
Simple theme which gives spotify a simpler design and a single highlight color.
Flat design, with dark blues for the background and single highlight colors in each scheme.
Default spotify, but provides a spinning image of a record when used with fullAppDisplay.js
Inspired by the Zorin GTK theme.
A soothing pastel theme for spotify. Comes in four variations, each with their own color schemes: catppuccin-mocha, catppuccin-frappe, catppuccin-latte, and catppuccin-macchiato. Source
Stay comfy while listening to music. Rounded corners and dark blues. Comes in two additional variations: Comfy-Chromatic and Comfy-Mono. Source
Default spotify with the colors of the popular scheme. Source
Default spotify with the colors of the popular scheme. Source
A theme attempting to bring canvas, the video/clip player, to spotify desktop. It normally is only available on mobile. Source
Same as default spotify but without ads and anything related to getting premium. Source
Inspired by the design of Windows 11. Source
Same as default spotify, but colors change dynamically with album art. Source
Synthwave theme with a lot of blur and effects. Source
Dark theme created by Rocketseat. Source
Another Spicetify theme inspired by Microsoft's Fluent Design System. Source
Simple dark green/grey theme. Source