Examine source code of Cool Dark Blue

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Cool Dark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-036-40a272fe657f748396e017c7a64ee2dc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(12, 103, 223)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(4, 43, 113)",
      "toolbar_field": "rgb(52, 101, 138)",
      "toolbar_field_text": "rgb(0, 12, 245)",
      "tab_line": "rgb(238, 9, 56)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(98, 102, 183)",
      "button_background_hover": "rgb(6, 219, 232)",
      "icons_attention": "rgb(232, 177, 6)",
      "icons": "rgb(14, 102, 247)",
      "ntp_background": "rgb(4, 6, 98)",
      "ntp_text": "rgb(53, 14, 247)",
      "sidebar_border": "rgb(14, 241, 247)",
      "sidebar_highlight": "rgb(0, 191, 196)",
      "tab_text": "rgb(16, 238, 137)",
      "tab_loading": "rgb(238, 9, 56)"
    }
  }
}