Examine source code of Minimal

{
  "manifest_version": 2,
  "name": "Minimal",
  "description": "A theme with a minimal aesthetic.",
  "author": "𝔇𝔦𝔞𝔟𝔩𝔬",
  "version": "1.0",
  "icons": {
    "32": "icon.svg"
  },
  "theme": {
    "colors": {
      "button_background_active": "#333333",
      "button_background_hover": "#282828",
      "bookmark_text": "white",
      "frame": "black",
      "frame_inactive": "black",
      "icons": "white",
      "icons_attention": "#12bc00",
      "ntp_background": "black",
      "ntp_text": "white",
      "popup": "#181818",
      "popup_border": "#303030",
      "popup_highlight": "#303030",
      "popup_highlight_text": "white",
      "popup_text": "white",
      "sidebar": "#181818",
      "sidebar_border": "#303030",
      "sidebar_highlight": "#303030",
      "sidebar_highlight_text": "white",
      "sidebar_text": "white",
      "tab_background_separator": "#303030",
      "tab_line": "white",
      "tab_loading": "white",
      "tab_selected": "#181818",
      "tab_text": "white",
      "tab_background_text": "white",
      "toolbar": "#181818",
      "toolbar_bottom_separator": "#181818",
      "toolbar_field": "black",
      "toolbar_field_border": "#181818",
      "toolbar_field_border_focus": "#303030",
      "toolbar_field_focus": "#111111",
      "toolbar_field_highlight": "#333333",
      "toolbar_field_highlight_text": "white",
      "toolbar_field_separator": "#181818",
      "toolbar_field_text": "white",
      "toolbar_field_text_focus": "white",
      "toolbar_top_separator": "#181818",
      "toolbar_vertical_separator": "#181818"
    }
  }
}