Examine source code of Main dark purple

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark purple",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-001-9c6d74e14860e77ee6f8f43e824bff25.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(33, 29, 41, 0.5)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(51, 45, 64)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(64, 56, 81, 0.75)",
      "toolbar_field_text": "rgb(239, 234, 255)",
      "tab_line": "rgb(148, 133, 181)",
      "popup": "rgb(51, 45, 64)",
      "popup_text": "rgb(255, 255, 255)",
      "ntp_background": "rgba(51, 45, 64, 0.5)",
      "tab_loading": "rgb(148, 133, 181)"
    }
  }
}