Despite fretting over all the security and traffic restrictions in London, Britons appear to be warming up to hosting the 2012 Summer Olympics. A warm yellow glow, to be exact.

The yellow is the color of the lights on the London Eye, the giant Ferris wheel on the River Thames that has been been programmed to reflect the mood of the country toward the Olympics, as measured by the tone of the social-media messages Twitter users are sending. The lights on the Eye change color depending on the tone detected in those messages, with yellow indicating a positive mood. On Monday night, for example, two thirds of the sphere glowed yellow.