Examine source code of Chill Lowlights

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Chill Lowlights",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-036-40a272fe657f748396e017c7a64ee2dc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(221, 221, 221)",
      "toolbar_text": "rgb(85, 85, 85)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(68, 68, 68)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(85, 85, 87)",
      "tab_line": "rgb(123, 127, 204)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(110, 112, 134)",
      "button_background_hover": "rgb(123, 127, 204)",
      "ntp_background": "rgb(216, 216, 216)",
      "tab_loading": "rgb(123, 127, 204)"
    }
  }
}