Examine source code of Caddicarus purple theme

{
  "name": "Caddicarus purple background theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "caddicarus firefox theme.png"
    },
    "colors": {
      "frame": "rgba(224, 224, 224, 1)",
      "tab_background_text": "rgba(235, 235, 235, 1)",
      "toolbar": "rgba(159, 88, 179, 1)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(235, 235, 235, 1)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(243, 130, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{446ed66e-5a95-4d67-adcf-e1ad757954b1}"
    }
  }
}