Patent ID: 7948394

Claim:
A control device for controlling the hue (H) of light (L) emitted by a light source, wherein said control device comprises a hue selection surface capable of displaying one or more hues available for said light of said light source and interaction detection means for detecting interaction between said hue selection surface and a user of said control device in selecting said hue for said light of said light source; wherein said hue selection surface displays a plurality of printed available hues for said light, and said interaction detection means is capable of detecting a selection of at least one of said printed displayed hues by said user; and wherein said control device comprises assigning means for assigning at least one subset of available printed hues to said hue selection surface, and wherein said interaction detection means is capable of detecting a selection of a hue of said assigned subset; and wherein said control device comprises duration detection means for detecting the duration of the interaction between said user and said hue selection surface, and said assigning means is capable of assigning said subset of said available printed hues to said hue selection surface in dependence on said detected duration.