Examine source code of Sunshine by M♥Donna

{
  "name": "Summer Sunshine by M♥Donna",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "summer sunshine vectorH4.jpg"
    },
    "colors": {
      "frame": "rgba(153, 205, 255, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(153, 202, 255, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(153, 202, 255, 0.08)",
      "toolbar_field_text": "rgba(3, 3, 3, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{36464e14-0123-4000-8367-2e405649a7f4}"
    }
  }
}