- Electron version: 0.37.5
- Operating system: Mac OS X 10.11.4

When I pass `backgroundColor: '#FF0000' to a window, the color that shows up on the screen is actually '#FF301E'. 

atom/browser/api/atom_api_web_contents.cc
content::RenderFrameHost* render_frame_host) {
  if (!render_frame_host->GetParent())
    Emit("dom-ready");
}
void WebContents::DidFinishLoad(content::RenderFrameHost* render_frame_host,
                                const GURL& validated_url) {
  bool is_main_frame = !render_frame_host->GetParent();
  Emit("did-frame-finish-load", is_main_frame);
  if (is_main_frame)
    Emit("did-finish-load");
}
void WebContents::DidFailProvisionalLoad(
    content::RenderFrameHost* render_frame_host,
    const GURL& url,
    int code,
    const base::string16& description,
    bool was_ignored_by_handler) {
  bool is_main_frame = !render_frame_host->GetParent();
  Emit("did-fail-provisional-load", code, description, url, is_main_frame);
  Emit("did-fail-load", code, description, url, is_main_frame);
}
void WebContents::DidFailLoad(content::RenderFrameHost* render_frame_host,
                              const GURL& url,
                              int error_code,
                              const base::string16& error_description,
                              bool was_ignored_by_handler) {
  bool is_main_frame = !render_frame_host->GetParent();
  Emit("did-fail-load", error_code, error_description, url, is_main_frame);
}
void WebContents::DidStartLoading() {