Cortex Command pink screen

Have you tried turning it off and on again? XD

Seriously though, verify game cache?

Not quite sure what Cortex Command runs off of, as I don't have it, but does it install any of the generic things on first start such as Net framework and Directx? Try seeing if those are updated. What are you trying to play it on, Windows; which version?

Update the drivers for the graphics card?
Pink is usually something wrong with graphics.
Posting pc specs would help imho.