Examine source code of Updated Strawberry Donut

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Updated Strawberry Donut",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-025-ffb27cfded66d27a465aeffe41e9fe61.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(246, 208, 135)",
      "toolbar_text": "rgba(255, 82, 145, 0.92)",
      "frame": "rgb(255, 122, 171)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(255, 122, 171, 0.52)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(255, 82, 145, 0.92)",
      "popup": "rgb(255, 122, 171)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(232, 174, 112)",
      "button_background_hover": "rgba(255, 122, 171, 0.52)",
      "icons_attention": "rgba(254, 9, 98, 0.96)",
      "ntp_text": "rgba(255, 82, 145, 0.92)",
      "popup_border": "rgba(254, 9, 98, 0.96)",
      "tab_background_separator": "rgba(254, 9, 98, 0.96)",
      "toolbar_bottom_separator": "rgba(255, 82, 145, 0.92)",
      "toolbar_field_border_focus": "rgba(255, 82, 145, 0.92)",
      "toolbar_field_border": "rgba(255, 82, 145, 0.92)",
      "toolbar_field_highlight_text": "rgba(255, 82, 145, 0.92)",
      "toolbar_field_highlight": "rgb(246, 208, 135)",
      "toolbar_field_separator": "rgba(255, 82, 145, 0.92)",
      "toolbar_top_separator": "rgba(255, 82, 145, 0.92)",
      "toolbar_vertical_separator": "rgba(255, 82, 145, 0.92)",
      "tab_loading": "rgba(255, 82, 145, 0.92)"
    }
  }
}