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A UI theme for Atom
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Isotope UI theme

A UI theme that offers endless possibilities: one Atom, many Isotopes ;) Isotope adapts to match any syntax theme and you can change its appearance quite extensively. It provides an easy-on-the-eyes backdrop for your code, with well balanced typography, whitespace and contrast.



  • Automatically adapts to your favourite syntax theme
  • Configurable!


  • Choose from a number of fonts included in this theme, or match the editor's font. Multiple font-weights are available.
  • Choose between a flat or gradient background.
  • Or even use any image as background (from your computer or the internets).
  • Choose low contrast tooltips (or fancy colorful ones).
  • Or go super minimal
  • Change font-sizes for the entire UI (everything will scale to fit) by putting this in your stylesheet:
html, body { font-size: 9px; }


This package includes a number of fonts that were designed especially for user interfaces. You can pick and choose without having to install anything on your system:

  • Cantarell - the system font for GNOME 3 (by Dave Crossland)
  • Clear Sans - Intel's new font (by Daniel Ratighan)
  • Fira Sans - the system font for Firefox OS (by Carrois and Edenspiekermann)
  • Open Sans - because we ♥ Open Sans (by Steve Matteson)
  • Oxygen - the system font for KDE (by Vernon Adams)
  • Roboto - the new font for Android (by Christian Robertson)
  • Source Sans Pro - Adobe's UI font also used in Brackets (by Paul D. Hunt)
  • Ubuntu - Ubuntu's system font (by Dalton Maag)
  • System default - Attempts to match your OS using this stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif
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