I'm using LabVIEW 6.1 for Linux (RedHat Linux 7.2). I'm using the Application Builder to build an executable. The front panel background color of the top-level VI changes when it becomes an executable. I'm using a light gray for the front panel background, as well as for the background of some of the various buttons on the panel. The light gray looks perfect when I run the VI. However, when I build and run the associated executable, the light gray becomes a very dark gray. It's quite a contrast. Any suggestions?