a potentiometer an optical shaft encoder a magnetic detector two axis hall effect sensors or other well known methods of detecting the angular position of a disk or shaft a cross section of a wall 609 of the networked device shows the edge 602 protruding through the wall and a portion of the colored area 603 visible through an opening in the wall 609 exterior view 640 shows the outside of the networked device with the wall 641 having an opening 642 in this embodiment the opening 642 has a wider section at the bottom to allow the edge 602 to protrude from the wall 641 while keeping the upper portion of the opening 642 narrower so that can be mostly filled with one section of the color wheel in the position shown section 614 is filling most of opening 642 to help make it even clearer which color is selected an indicator arrow 643 is included on the wall 641 pointing at the current color the color selection mechanism 600 may be designed to provide a detent at each section 610 619 of the colored area 603 to make it easy for the user to center the desired section in the opening 642 fig7 shows another alternative embodiment of a color selection mechanism 700 to allow a user to select a color top view 720 shows the color wheel from the top and side view 730 shows the color wheel from the side with some associated structure that has been omitted from the top view 720 for clarity the color wheel mechanism 700 has a color wheel with an angled side 701 an edge 702 at the outermost.