Different result than example, could it be due to an installation error?

I am new to FreeFem++ and was trying to make sure it worked correctly.
Unfortunately, I was trying to reproduce the example on building a mesh for a cube, but wouldn’t obtain the same image. I copied the code : cube.idp in a tip, but the image I obtained is in black and white whereas the image showed is colored. Is it due to an installation misstep or do I need to add some more code to the example ?
For reference, I put a screenshot of my screen, showing the output of the code:

Thank you for your time ! :slight_smile: