Under this directory you will find complete ExtJS themes. Each theme has a set of CSS and a set of images. Mostly these themes have been created using an online ExtJS theme-builder: http://extbuilder.dynalias.com. To work with Heron and for some tweaks, each theme below will have a corresponding file "default-theme-.css" e.g. default-theme-greenery.css under heron/resources/css. Making a new theme is two steps: - create a theme using http://extbuilder.dynalias.com - put the generated directory with css and images dirs under this dir with the name of the theme - create a default-theme-.css under heron/resources/css, starting with a copy of an existing theme css like default-theme-gray.css To include a theme in your app, see examples/theming/index.html Example online: http://lib.heron-mc.org/heron/latest/examples/theming Example index.html head content. . .