Examine source code of Light yaru orange

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Light yaru orange",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(232, 232, 232)",
      "toolbar_text": "rgb(31, 31, 31)",
      "frame": "rgb(232, 232, 232)",
      "tab_background_text": "rgb(31, 31, 31)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(34, 34, 34)",
      "tab_line": "rgb(103, 103, 103)",
      "popup": "rgb(255, 113, 57)",
      "popup_text": "rgb(34, 34, 34)",
      "button_background_hover": "rgb(255, 113, 57)",
      "icons": "rgb(103, 103, 103)",
      "ntp_background": "rgb(243, 242, 242)",
      "ntp_text": "rgb(108, 108, 108)",
      "popup_border": "rgba(255, 255, 255, 0.5)",
      "sidebar_border": "rgb(13, 168, 176)",
      "sidebar_highlight_text": "rgb(52, 222, 179)",
      "sidebar_highlight": "rgba(108, 108, 108, 0.5)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(44, 44, 44)",
      "tab_selected": "rgb(151, 53, 82)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_field_border_focus": "rgb(211, 229, 245)",
      "toolbar_field_border": "rgba(108, 108, 108, 0.5)",
      "toolbar_field_highlight": "rgb(255, 113, 57)",
      "tab_loading": "rgb(103, 103, 103)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b537cb0e-36b4-4df2-9ecd-54684b2caddd}"
    }
  }
}