it is purple.

manifest.json

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "it is purple.",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(39, 31, 64)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(15, 10, 34)",
      "tab_background_text": "rgb(197, 191, 226)",
      "toolbar_field": "rgb(15, 10, 34)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(171, 44, 158, 0)",
      "popup": "rgb(15, 10, 34)",
      "popup_text": "rgb(255, 255, 255)",
      "ntp_background": "rgb(15, 10, 34)",
      "popup_border": "rgb(132, 99, 237)",
      "toolbar_field_highlight": "rgb(90, 77, 139)",
      "tab_loading": "rgba(171, 44, 158, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8bceddfa-21de-4940-a542-55bed7ff039a}"
    }
  }
}