Examine source code of DarkMugetsu

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "DarkMugetsu",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 9, 22)",
      "toolbar_text": "rgb(113, 162, 239)",
      "frame": "rgb(0, 9, 22)",
      "tab_background_text": "rgb(89, 145, 236)",
      "toolbar_field": "rgba(1, 24, 50, 0.87)",
      "toolbar_field_text": "rgb(89, 145, 236)",
      "tab_line": "rgb(89, 145, 236)",
      "popup": "rgb(0, 7, 16)",
      "popup_text": "rgb(89, 145, 236)",
      "tab_loading": "rgb(89, 145, 236)"
    }
  }
}