// This example demonstrates how to use the ClearParameterColor command by creating
// a simple null, adding a custom parameter and then setting the color of that
// custom parameter and then clearing it.
//
// STEP 1: Run the following script:
NewScene(null, false);
GetPrim("Null", null, null);
SIAddCustomParameter("null", "purple_param", siDouble, 0, 0, 1, null, 5, 0, 1, null, null);
SetParameterColor("null.CustomPSet.purple_param", 16711830);
//
// STEP 2: View that parameter color by opening the SceneExplorer (make sure that
// the option 'Use Wire Colors' is on) and expanding the CustomPSet node.
//
// STEP 3: To clear the parameter color, paste this line (uncommented) 
//         in the Script Editor and run it:
//
// ClearParameterColor("null.CustomPSet.purple_param");