How to set background color to black for PCI-1407 on 2nd target machine with LabVIEW 5.1

[LabVIEW 5.1]

I have one machine run LabVIEW 5.1 with PCI-1407 card.The background
of video picture is black. when I use same application exe file on the
2nd target machine, the background color of video picture turn into
blue.How to set the video background color to black?