• Handles.SetSourceHandleFromHandle
• Handles.SetIcon
• Math.Cast.ToInteger
• Handles.GetIconId
• Handles.ClearSelection

  <step pause="0.01">Handles.SetSourceHandleFromHandle(handle:"Location=Colours,1,3")</step>
  <step pause="0.01">Handles.SetIcon(Math.Cast.ToInteger(Handles.GetIconId(handle:"Location=Colours,1,1")))</step>
  <step pause="0.01">Handles.ClearSelection()</step>

This explains the functional steps within the sequence. For all the other XML details please refer to Formats and syntax

• Handles.SetSourceHandleFromHandle sets a particular handle as the source handle - here: the target for the copy operation
• Handles.SetIcon sets the icon of the target handle
• Math.Cast.ToInteger makes sure the icon id is of the Int type
• Handles.GetIconId gets the id of the icon which is currently used for another specified handle
• Handles.ClearSelection clears the selection so that no handle is highlighted as selected any more

This is a snippet only - adapt and use it in your own macros.