A blend of the Gruber Darker and Ayu Dark color themes.  Keeps
Gruber Darker's deep #181818 background while replacing its muted
syntax with the warm, high-contrast palette of Ayu Dark.

Provides faces for Avy, Company, Compilation, Consult, Corfu,
Diff, Dired, Doom Modeline, Ediff, Eglot, Flycheck, Flymake,
Font Lock, Git Gutter, Magit, Marginalia, Markdown, Mode Line,
Multiple Cursors, Orderless, Org, Org Roam, PDF Tools, Rainbow
Delimiters, Tab Bar, Transient, Vertico, Which Key, Whitespace,
Yasnippet, and more.