Using a program from CVI 5.5, I find that the colors for the tabs do not appear correctly when using the CVI 6.0 engine, the colors are lighter than they should be. One of the programs I was using is the tabdemo.prj in the CVI samples directory. The 6.0 engine was installed by TestStand on a system that originally had CVI 5.5. Replacing the 6.0 engine with 5.5 corrects this problem.