Sheets Row Highlighter — matsu7089

Features:
* Highlight row and column. (Only when the current cell is in the screen)
* Change highlight color and opacity.
* Shortcuts for toggle highlight.
* Automatically save and apply highlight settings on a per-sheet basis.

You can add shortcuts from the "Manage Extension Shortcuts"
https://support.mozilla.org/en-US/kb/manage-extension-shortcuts-firefox

If you like it, I'd appreciate it if you could give it a star!
https://github.com/matsu7089/sheets-row-highlighter