1. A system comprising: a stylus; and a computing device, comprising: a processor; and a computer-readable storage medium storing instructions which, when executed by the processor, cause the processor to: at a first time, receive a user input associating a specific data item with a specific color; at a second time: receive the specific color from the stylus; responsive to receiving the specific color from the stylus, retrieve the specific data item that was associated with the specific color by the user input at the first time; and display the specific data item on the computing device, the stylus being configured to capture the specific color from a physical object.