Examine source code of Deep Space With Stars

{
  "manifest_version": 2,
  "name": "宇宙",
  "version": "1.0",
  "description": "A simple yet clean dark space theme for firefox.",
  "theme": {
    "images": {
      "theme_frame": "theme_frame_opacity.png"
    },
    "colors": {
      "frame": "#3366cc",
      "tab_background_text": "#ffffff",
      "ntp_background": "#000000",
      "tab_line": "none",
      "tab_selected": "rgba(29, 29, 29, 0.69)",
      "toolbar": "rgba(29, 29, 29, 0.0)",
      "toolbar_field_border": "rgba(1, 1, 3, 0.7)",
      "toolbar_field_border_focus": "rgba(16, 16, 25, 1)",
      "toolbar_field_highlight": "rgba(112, 112, 112, 0.6)",
      "popup_highlight": "rgba(16, 16, 25, 0.5)",
      "toolbar_field_text": "#ffffff",
      "toolbar_field": "#00000",
      "toolbar_field_text_focus": "#ffffff",
      "ntp_text": "#ffffff",
      "toolbar_field_seperator": "#ffffff"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d8a456a8-d77d-4eea-9e4a-47038ba3a357}"
    }
  }
}