We need to avoid Real Time light detection

Vuforia SDK Version: 6.0 - Description with steps to reproduce: Dear Team, Good Evening, We are using Unity (2018.2.15) with Vuforia SDK for Marker tracking (VuMarks). The 3D objects on the marker placed are turning to different color while tracking the Vumarks from device camera. We need to avoid the 3D object detecting the real light for display. Ex: The original color of the 3D object on the Vumark is Blue, sometimes depends upon real world lighting, the 3D object is turning to light blue color. Kindly suggest me on how to avoid the real light behavior on 3D objects even if track in different lighting conditions. Advance Thanks!! - Development OS (Mac OS X, Windows, Linux): Windows, Mac - Mobile OS and Version: Android and IoS - Mobile Device Manufacturer and Model name: IPad and Samsung Tablet S3, S4 - Do the Vuforia Sample Applications show the same behavior?: No. Did not tried the sample behavior.