Using this to easily highlight text. Thanks!
To other users:
You may want to pin the extension. If you don't know how to, look it up.
1. After installing the extension, make sure to refresh all open google doc pages; otherwise, the extension won't work!

2. To edit the extension, click the extension icon. Make sure to press "Save all" or else your changes won't save.

3. To edit the extension's shortcuts, go to the extension settings (left click the extension icon and press manage extension) --> in the newly opened tab, click the cog icon just above the enable extension button --> click "Manage Extension Shortcuts".