Examine source code of Indigo1

{
  "name": "Indigo1",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "P8230194.JPG"
    },
    "colors": {
      "frame": "rgba(0, 32, 64, 0.4)",
      "tab_background_text": "rgba(0, 32, 64, 0.8)",
      "bookmark_text": "rgba(0, 32, 64, 0.8)",
      "toolbar_field_text": "rgba(0, 32, 64, 0.8)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{dea7b2ab-d58a-4985-9fe3-4fe62d96825e}"
    }
  }
}