Add Graphite theme

Graphite/README.md

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+## Graphite theme
+
+Version: _2023.12.29_
+
+Theme supports gtk2, gtk3, gtk4, and cinnamon.
+
+This is a repackaging of the Graphite theme for convenience of installation and ease of configuration. All credit for the theme goes to the original author(s). See [https://github.com/vinceliuice/Graphite-gtk-theme](https://github.com/vinceliuice/Graphite-gtk-theme) for more information.
+
+## Installation
+
+Most easily installed via Cinnamon's Themes module in Cinnamon settings.
+
+## Options/Configuration
+
+Various options are available such as light/dark theme, accent color, etc. Simply go to `~/.themes/Graphite` directory and run `options.py`