I have made a chrome extension that does that: https://github.com/ahrm/chrome-fastread https://github.com/ahrm/chrome-fastread You can customize the css attrib

I have made a chrome extension that does that: https://github.com/ahrm/chrome-fastread https://github.com/ahrm/chrome-fastread You can customize the css attributes of highlighted text and rest of the word using the two input texts.