Port https://www.getpersonas.com/en-US/update_check/<persona_id> to AMO When you install a theme, Firefox stores the JSON blob for the theme in the browser (`lightweightThemes.usedThemes` in your `about:config`). Firefox pings daily the `updateURL` of the currently used theme (not any other installed themes). If the `headerURL` or `footerURL` changes, Firefox updates the header and footer graphics accordingly. For example: https://www.getpersonas.com/en-US/update_check/44495 { "accentcolor": "#663300", "author": "MGM", "category": "Film and TV", "dataurl": "data:image/png;base64,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", "description": "A dynamic reinvention of the Oscar\u00ae-winning film and globally successful TV series, FAME captures the visceral excitement and explosive energy of young artists and performers struggling to prove their talent and find their own\u2028voice. Caught up in the intense atmosphere of a performing arts high school\u2028in New York, they confront both the tantalizing promise of success, and the\u2028challenges of thriving in a highly competitive environment.\r\nhttp://www.generationfame.com", "detailURL": "http://www.getpersonas.com/persona/44495", "footerURL": "http://getpersonas-cdn.mozilla.net/static/9/5/44495/fame_Persona_footer-final.png?1260925626", "headerURL": "http://getpersonas-cdn.mozilla.net/static/9/5/44495/Persona_Header_fame-final.png?1260925626", "iconURL": "http://getpersonas-cdn.mozilla.net/static/9/5/44495/preview_small.jpg?1260925626", "id": "44495", "name": "Generation Fame", "previewURL": "http://getpersonas-cdn.mozilla.net/static/9/5/44495/preview.jpg?1260925626", "textcolor": "#fce8c3", "updateURL": "https://www.getpersonas.com/en-US/update_check/44495", "username": "mgmstudios", "version": "1260925626" }

I think this is a dupe of bug 641640.