Color is not claimed as a feature of the mark.
The mark consists of a fanciful representation of a tour bus with a guide holding a microphone and pointing on the top level along with three tourists, and a bus driver on the lower level with his hand out the window waving. The bus has the wording SIGHTSEEING TOURS along one side and the wording BIG BUS TOURS on the front in a rectangle with the words HOP-ON on one side of the rectangle and HOP-OFF on the other.