Examine source code of Silverwatch

{
  "manifest_version": 2,
  "name": "Silverwatch",
  "version": "1.0",
  "description": "A dark midnight blue and silver browser theme.",
  "browser_specific_settings": {
    "gecko": {
      "id": "silverwatch@mytheme",
      "strict_min_version": "68.0"
    }
  },
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#080e1c",
      "frame_inactive": "#0c1220",
      "tab_background_text": "#607090",
      "tab_selected": "#121e34",
      "tab_line": "#9ab0d0",
      "tab_loading": "#9ab0d0",
      "tab_text": "#d0dff0",
      "toolbar": "#0e1828",
      "toolbar_text": "#c0d0e8",
      "toolbar_field": "#141e30",
      "toolbar_field_text": "#d0dff0",
      "toolbar_field_border": "#203050",
      "toolbar_field_focus": "#1a2840",
      "toolbar_field_text_focus": "#e8f0ff",
      "toolbar_field_border_focus": "#9ab0d0",
      "toolbar_top_separator": "#04080e",
      "toolbar_bottom_separator": "#04080e",
      "toolbar_vertical_separator": "#141e30",
      "icons": "#88a8c8",
      "icons_attention": "#a8c4e0",
      "button_background_hover": "#182438",
      "button_background_active": "#203050",
      "popup": "#0e1828",
      "popup_text": "#c0d0e8",
      "popup_border": "#203050",
      "popup_highlight": "#1a2840",
      "popup_highlight_text": "#e8f0ff",
      "sidebar": "#080e1c",
      "sidebar_text": "#6880a8",
      "sidebar_highlight": "#1a2840",
      "sidebar_highlight_text": "#e8f0ff",
      "sidebar_border": "#141e30",
      "ntp_background": "#080e1c",
      "ntp_text": "#c0d0e8"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  }
}