# Middleweight Themes (after Firefox 57)

**URL:** <https://discourse.mozilla.org/t/middleweight-themes-after-firefox-57/15214>\
**Category:** Themes\
**Created:** [April 24, 2017, 7:09pm UTC](https://discourse.mozilla.org/t/middleweight-themes-after-firefox-57/15214 "2017-04-24T19:09:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![twisfowt](https://avatars.discourse-cdn.com/v4/letter/t/8e7dd6/32.png) [@twisfowt](https://discourse.mozilla.org/u/twisfowt)\
**Post date:** [April 24, 2017, 7:09pm UTC](https://discourse.mozilla.org/t/middleweight-themes-after-firefox-57/15214/1 "2017-04-24T19:09:37Z")

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There has been talk in various blogs and forums that after  
Release 57 there will be a variety of theme which will be  
somewhat more configurable than the current Personas  
(aka. lightweight themes) and the old style full themes.

Has the planning on this reached the point of having a  
tracking bug or a dedicated blog?

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**Author:** ![heubergen](https://avatars.discourse-cdn.com/v4/letter/h/a9a28c/32.png) [@heubergen](https://discourse.mozilla.org/u/heubergen)\
**Post date:** [April 24, 2017, 8:16pm UTC](https://discourse.mozilla.org/t/middleweight-themes-after-firefox-57/15214/2 "2017-04-24T20:16:24Z")

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I call them Theme API and you find here some ressources about it:  
Blog: [https://blog.mozilla.org/addons/2017/02/24/improving-themes-in-firefox/](https://blog.mozilla.org/addons/2017/02/24/improving-themes-in-firefox/)  
More detailed “documentation”: [https://docs.google.com/document/d/1ueD6V7aLLTuc1GAOxxQYcwl2HR-k62HHu3q8knTJ4FU/pub](https://docs.google.com/document/d/1ueD6V7aLLTuc1GAOxxQYcwl2HR-k62HHu3q8knTJ4FU/pub)