Examine source code of Ourple

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Ourple",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-002-609370e89a219e0548ac5ef6b4a7dd2e.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(231, 173, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(172, 116, 200)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(182, 0, 255)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_hover": "rgb(55, 18, 72)",
      "icons": "rgb(220, 171, 245)",
      "ntp_background": "rgb(157, 90, 188)",
      "popup_border": "rgb(220, 171, 245)",
      "popup_highlight": "rgb(169, 0, 255)",
      "tab_selected": "rgb(43, 15, 56)",
      "tab_loading": "rgb(182, 0, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9eedbb00-c19e-4ad0-a9c5-36e751a64a97}"
    }
  }
}