Examine source code of Dancing Brushes

{
  "name": "Dancing Brushes",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "mosaik.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(150, 89, 3, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(9, 45, 61, 0.76)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(232, 147, 102, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d4cdeac3-8913-47f7-a0a0-44829490b61c}"
    }
  }
}