Examine source code of Default Light Red

{
  "manifest_version": 2,
  "name": "Light Red",
  "description": "A theme with a light color scheme and some red accents.",
  "author": "Mozilla & Kaotic",
  "version": "1.0",
  "icons": {
    "32": "icon.svg"
  },
  "theme": {
    "colors": {
      "tab_background_text": "rgb(21,20,26)",
      "tab_selected": "#fff",
      "tab_text": "rgb(21,20,26)",
      "tab_line": "rgb(209, 0, 40)",
      "icons": "rgb(91,91,102)",
      "frame": "#f0f0f4",
      "popup": "#fff",
      "popup_text": "rgb(21,20,26)",
      "popup_border": "rgb(240,240,244)",
      "popup_highlight": "#e0e0e6",
      "popup_highlight_text": "#15141a",
      "toolbar": "#f9f9fb",
      "toolbar_top_separator": "rgb(209, 0, 40)",
      "toolbar_bottom_separator": "#ccc",
      "toolbar_field": "#f0f0f4",
      "toolbar_field_text": "rgb(21,20,26)",
      "toolbar_field_border": "transparent",
      "toolbar_field_focus": "white",
      "toolbar_text": "rgb(21,20,26)",
      "ntp_background": "#F9F9FB",
      "ntp_text": "rgb(21, 20, 26)",
      "popup_action_color": "rgb(91,91,102)",
      "button": "rgba(207,207,216,.33)",
      "button_hover": "rgba(207,207,216,.66)",
      "button_active": "rgb(207,207,216)",
      "button_primary": "rgb(0, 97, 224)",
      "button_primary_hover": "rgb(2, 80, 187)",
      "button_primary_active": "rgb(5, 62, 148)",
      "button_primary_color": "rgb(251, 251, 254)",
      "error_text_color": "rgb(197,0,66)",
      "input_color": "rgb(21,20,26)",
      "input_background": "rgb(255,255,255)",
      "autocomplete_popup_hover": "rgb(240,240,244)",
      "autocomplete_popup_separator": "rgb(240,240,244)",
      "appmenu_update_icon_color": "#2AC3A2",
      "appmenu_info_icon_color": "#0090ED",
      "tab_icon_overlay_stroke": "rgb(255,255,255)",
      "tab_icon_overlay_fill": "rgb(91,91,102)"
    },
    "properties": {
      "color_scheme": "light",
      "panel_hover": "color-mix(in srgb, currentColor 12%, transparent)",
      "panel_active": "color-mix(in srgb, currentColor 20%, transparent)",
      "panel_active_darker": "color-mix(in srgb, currentColor 27%, transparent)",
      "toolbar_field_icon_opacity": "0.72",
      "input_border_color": "color-mix(in srgb, currentColor 41%, transparent)",
      "zap_gradient": "linear-gradient(90deg, #9059FF 0%, #FF4AA2 52.08%, #FFBD4F 100%)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f9eff0cb-2ed3-4cd8-86e7-7be4beb49a5b}"
    }
  }
}