Save this as userscript, or convert to bookmarklet. document.body.style.filter = "invert(1)"; document.body.style.backgroundColor = "#141414"; I use a

Save this as userscript, or convert to bookmarklet. document.body.style.filter = "invert(1)"; document.body.style.backgroundColor = "#141414"; I use a fine tuned custom stylesheet with Stylus chrome extension.