Google at Google Hong Kong is currently showing a colorless Google logo. The same logo showed on Google Poland as well about a week ago. A Google spokesperson told “the logo is only displayed when Google wants to recognize a “current loss or tragedy.” Thus, the logo on Google China and Hong Kong is shown for the earthquake in Qinghai. “From time to time we show a special colorless logo on our homepage in recognition of a current loss or tragedy. Users in Poland recently saw this muted logo, and now we’re showing the logo to users in China and Hong Kong to pay our respects to the victims of the Qinghai Earthquake. We are saddened by the loss of life and great damage caused by this natural disaster, and our thoughts are with the people of Qinghai, China,” said Google. Note: Google has created resources to help Qinghai people.
Baidu also has a colorless logo: