If you go to Google's home page, you will see the multicolored Google logo is a simple gray color. Google changed their home page to honor the National Day of Mourning for President George H. W. Bush. Bing also did with a special photo of the US Capitol with the flag at half-staff.
Here is a screen shot of the Google home page today:
Here is a screen shot of the Bing home page today:
He lived 94 years, born on June 12, 1924 and passing on November 30, 2018. He served as President of the United States from January 20, 1989 to January 20, 1993. His VP was Dan Quayle and he was proceeded by Ronald Reagan and succeeded by Bill Clinton. Today he is being laid to rest.
Forum discussion at Twitter.