File>Properties>Colors and Attributes tab, between the Marker and Rubber band controls."> Help | Kubotek3D

Selection Color Property
KeyCreator \ General-Interface \ Selection \ Selection-Color-Property

Selection Color Property

A Selection Color color well control is located in the File>Properties>Colors and Attributes tab, between the Marker and Rubber band controls. This color will be used to designate entities that are the current entity in the selection process.