Examine source code of Oceanic Blue

{
  "theme": {
    "images": {
      "theme_frame": "firefoxpersonbl.png"
    },
    "colors": {
      "frame": "#adadad",
      "tab_background_text": "#0400ff"
    }
  },
  "version": "2.0",
  "name": "Oceanic Blue",
  "manifest_version": 2,
  "description": "A light blue theme. Works well with the add-on \"App Button Clear 1.0\" (makes the firefox orange button clear)."
}