What color should be antifreeze be in a Pontiac Sunfire, 03?

[alimariewvu]

It looks almost brown/orange. I'm having a smelling/burning smell come from under hood. Somebody told me it could be a head gasket and to check the color of antifreeze? They said if it was a murky brown that could be the problem. However, I'm reading online and antifreeze is not just green anymore.

 

[Zimgxp]

It is Dex cool, it is orange when new. Have the cooling system flushed and refilled.