This method gets the highlight color.
HRESULT get_HiliteColor( OLE_COLOR *pclr );
NOERROR indicates success. E_INVALIDARG indicates that an invalid argument has been entered.
Use the GetRValue, GetGValue, and GetBValue macros to get the color components of pclr.
IASSlider::put_HiliteColor, GetRValue, GetGValue, GetBValue