You can view the html code of a page in your browser.
To view source in Safari:
1. Click on the “Develop” menu in the top menubar
2. If the Develop menu is not visible, go into Preferences in the Advanced section and select “Show Develop menu in menu bar.”
3. Click on “Show Page Source”
4. This will open a text window with the HTML source of the page you’re looking at.
On most web pages you can also view the source by right-clicking on the page (not on an image) and choosing “Show Page Source.” This will only display if the Develop menu is enabled in Preferences.
For other browsers, google “view html source in Firefox” or your browser to find out how to enable.
There will be lines that show the path to content in the themes folder, in this case it was https://dishingupthedirt.com/wp-content/themes/DishingUpTheDirt/
I found the stylesheet reference in this line:
<link rel=’stylesheet’ id=’twentytwelve-style-css’ href=’https://dishingupthedirt.com/wp-content/themes/DishingUpTheDirt/style.css?ver=3.9.1′ type=’text/css’ media=’all’ />
You can view that file to find out more.
Happy theme hunting!