Examine source code of Sunset by M♥Donna

{
  "name": "Sunset by M♥Donna",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "SunsetH2.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 214, 117, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(254, 244, 210, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0.09)",
      "toolbar_field_text": "rgba(255, 248, 219, 1)",
      "tab_line": "rgba(255, 248, 219, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b6dba27f-f35b-43b4-b913-ebecb38c6fce}"
    }
  }
}