Rated 3 out of 5 stars

It works; but if we talk about HTML code, but it's a bit basic. It highlights things in quotation marks and selected attributes and hyperlinks: that's all. In CSS there are a few keywords as well as comments it will pick up. There are no add-on options so far allowing particular mark-up schemas and apparently no platform for users to develop and submit their own schemas to quickly improve this add-on. But good luck with developing this further.

This review is for a previous version of the add-on (0.7).