I wrote a library that lets you cycle through the available themes in Emacs. F10 and shift-F10 keys will cycle forward and backward through the themes. The theme name is printed for reference.
https://github.com/tsengf/theme-cycle
Installation
Download theme-cycle.el into ~/.emacs.d.
Add the following to your Emacs configuration
(add-to-list 'load-path (expand-file-name "~/.emacs.d)
(require 'theme-cycle)
;; Load as many themes as you are interested in exploring.
(use-package doom-themes)
(use-package ef-themes)
(use-package modus-themes)
(use-package solarized-themes)
To Use
Use F10 to cycle forward through the themes. Use shift-F10 to cycle backward through the themes.
Create an Emacs theme disco by randomly switching themes manually or automatically (from the Ef Themes collection): https://github.com/pprevos/disco-ef-themes