Examine source code of Magenta-Blue Gradient

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Magenta-Blue Gradient",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 14, 255)",
      "toolbar_text": "rgb(255, 0, 152)",
      "frame": "rgb(0, 14, 255)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 98, 212)",
      "toolbar_field_text": "rgb(0, 13, 255)",
      "tab_line": "rgb(255, 0, 117)",
      "popup": "rgb(255, 98, 212)",
      "popup_text": "rgb(0, 14, 255)",
      "tab_loading": "rgb(255, 0, 117)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1d33876d-79b2-4e29-977a-456b463d49e7}"
    }
  }
}