BCGControlBar Pro for MFC
void CBCGPEditCtrl::EnableGradientMarkers ( BOOL  bEnable = TRUE)

Enable or disable gradient markers.

Use this method to enable or disable gradient markers. If this option is enabled, the edit control draws markers with gradient color, similar to Visual Studio 2005. Otherwise it draws markers similar to older versions of Visual Studio.

bEnableIf TRUE, gradient markers will be enabled. If FALSE, gradient markers will be disabled.