That is truly a nice tribute. For those who aren't very familiar with the topic, the background is made up of 'Khadi', a handspun fabric that holds great symbolism for Gandhi's ideals and his ahimsa (non-violence) movement. And the letters are done in Indigo (color dye), one of India's most prominent exports during the colonial era.
Somehow I feel that to turn the G of google into the head of Gandhi is somewhat disrespectful (but I can't tell you why), but it's nice of them to commemorate him.
