Examine source code of cattles theme

{
  "name": "cattles-theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "cattles-theme.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(56, 6, 6, 1)",
      "toolbar": "rgba(139, 154, 158, 1)",
      "bookmark_text": "rgba(3, 1, 1, 1)",
      "toolbar_field": "rgba(230, 186, 152, 1)",
      "toolbar_field_text": "rgba(209, 25, 25, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{dac4334f-6e58-4cd6-b1e3-3214943f8fae}"
    }
  }
}