Onboard background is a free Chrome add-on developed by rosiecoder. It falls under the category of Browsers and is classified as an Add-ons & Tools program. With Onboard background, users can easily change the background color of any webpage they visit.

This add-on allows users to select from a variety of colors, including blue, green, and yellow. By simply clicking on a block on the webpage, the background color will change to the selected color. This feature can be particularly useful for users who want to protect their eyes from the intensity of light colors.

Onboard background is a simple and straightforward tool that provides an easy solution to customize the appearance of webpages. If you're looking for a quick and convenient way to change the background color while browsing the internet, Onboard background is worth giving a try.