There's this Firefox add-on extension named, "Personas Plus". This extension lets you use your own images to display as a "header" and "footer" on your web browser.
Here's a header and footer that I made for my browser.
This is the "header" imager...
This is the "footer" image.
This is what it looks like in my browser...
You can get the Firefox add-on here...
https://addons.mozilla.org/en-US/firefo ... us/?src=ssAnd the documentation for creating your own "header & footer" can be found here...
https://addons.mozilla.org/en-US/developers/docs/themesIt's really easy to do and a lot of fun. I have several of them that I've made and use from time to time depending on my mood.
Just take a look at the "header & footer" documentation, install the "Personas Plus" add-on extension and you'll be on your way to having your own art displayed in your web browser. There's also many other headers and footers you can chose from that other people have made.
I think the best thing about this is, that you can use your own art work to decorate your web browser.