I don't think it's a systems color thing but you can go to file - options - systems colors and set your systems colors: to black on white. That will rule that out.
That option is used for testing your graphics card compatibility with Creo. If it solves the problem, it typically means the problem is in your graphics card. The real answer can simply be that you need to update your graphics card drivers or it can mean that your card is not suited for use with Creo.
If you haven't noticed any other issues and you only needed to generate that image, you may want to remove that option from your config. You can try upgrading your graphics card drivers once removing the option also.
If it doesn't cause other issues, you can keep the option but it may slow your graphics response or effect creo performance in other ways.