Examine source code of March 7th Theme (Light)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "🌸 March 7th Theme (Light)",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 255, 255, 0)",
      "toolbar_text": "rgb(50, 50, 50)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(50, 50, 50)",
      "toolbar_field": "rgba(255, 255, 255, 0)",
      "toolbar_field_text": "rgb(50, 50, 50)",
      "tab_line": "rgb(50, 50, 50)",
      "popup": "rgba(138, 205, 230, 0.9)",
      "popup_text": "rgb(50, 50, 50)",
      "button_background_active": "rgb(237, 158, 211)",
      "button_background_hover": "rgb(237, 158, 211)",
      "frame_inactive": "rgba(255, 255, 255, 0.95)",
      "icons_attention": "rgb(50, 50, 50)",
      "icons": "rgb(50, 50, 50)",
      "ntp_background": "rgb(255, 255, 255)",
      "ntp_text": "rgb(50, 50, 50)",
      "popup_border": "rgb(50, 50, 50)",
      "popup_highlight_text": "rgb(50, 50, 50)",
      "popup_highlight": "rgba(237, 158, 211, 0.9)",
      "sidebar_border": "rgb(50, 50, 50)",
      "sidebar_highlight_text": "rgb(50, 50, 50)",
      "sidebar_highlight": "rgba(237, 158, 211, 0.9)",
      "sidebar_text": "rgb(50, 50, 50)",
      "sidebar": "rgb(138, 205, 230)",
      "tab_background_separator": "rgb(50, 50, 50)",
      "tab_loading": "rgb(50, 50, 50)",
      "tab_selected": "rgba(237, 158, 211, 0.5)",
      "tab_text": "rgb(50, 50, 50)",
      "toolbar_bottom_separator": "rgb(50, 50, 50)",
      "toolbar_field_border_focus": "rgb(50, 50, 50)",
      "toolbar_field_border": "rgb(50, 50, 50)",
      "toolbar_field_focus": "rgba(255, 255, 255, 0)",
      "toolbar_field_highlight_text": "rgb(50, 50, 50)",
      "toolbar_field_highlight": "rgba(237, 158, 211, 0.9)",
      "toolbar_field_separator": "rgb(50, 50, 50)",
      "toolbar_field_text_focus": "rgb(50, 50, 50)",
      "toolbar_top_separator": "rgb(50, 50, 50)",
      "toolbar_vertical_separator": "rgb(50, 50, 50)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8d8408b3-3039-444a-ab7f-88bf4dc152f9}"
    }
  }
}