diff --git a/README.md b/README.md
index 3404e46..f0b15bb 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,14 @@ There are a [bunch of themes](./src/Themes) included in this package. You can lo
 
 You can build your own CSS theme with just a couple of classes, copy over [the base stylesheet](./src/Themes/highlight-light-lite.css), and make adjustments however you like. Note that `pre` tag styling isn't included in this package.
 
+### Inline themes
+
+If you don't want to or can't load a CSS file, you can opt to use the `InlineTheme` class. This theme takes the path to a CSS file, and will parse it into inline styles:
+
+```php
+$highlighter = (new Highlighter(new InlineTheme(__DIR__ . '/../src/Themes/solarized-dark.css')));
+```
+
 ### Terminal themes
 
 Terminal themes are more limited because of their limited styling options. Right now there's one terminal theme provided: `LightTerminalTheme`. More terminal themes are planned to be added in the future.