Examine source code of Color Win

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Color Win",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-039-717a66ba4d455686088c80f391cb3264.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(248, 112, 140)",
      "toolbar_text": "rgb(248, 112, 140)",
      "frame": "rgb(0, 161, 255)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(0, 255, 234)",
      "toolbar_field_text": "rgb(0, 14, 255)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(98, 102, 183)",
      "button_background_hover": "rgb(255, 92, 2)",
      "icons": "rgb(255, 0, 248)",
      "ntp_background": "rgb(0, 255, 41)",
      "popup_border": "rgb(255, 241, 0)",
      "popup_highlight_text": "rgb(255, 92, 2)",
      "sidebar_border": "rgb(255, 104, 0)",
      "tab_loading": "rgb(42, 0, 245)",
      "tab_selected": "rgb(255, 92, 2)",
      "tab_text": "rgb(0, 0, 255)",
      "toolbar_field_border": "rgb(255, 0, 248)"
    }
  }
}