Why is my HD analog camera showing up black and white on my Flux XVR?

Check the signal type supported by the camera.  Note our FX-XVR's support TVI, AHD, CVI & Analog.  TVI, CVI & Analog signals are autosensed.  CVI has to be manually changed within the camera signal section on the XVR. 

CVI cams are the most common cause of this issue.  If using a CVI cam make sure to go to the camera signal section and manually change the channels that have CVI cams connected to them to CVI signal type (Main Menu -> Camera-> Camera Signal).