Rusty colored coolant

IF this has occurred just resently - it is quite possible there is transmission fluid leaking into the radiator through the internal transmission fluid cooler - mixing with the engine coolant.. Highly recommend hands-on evaluation by qualified personnel..

The dexcool coolant itself is orange in color. You could have oil leaking into your coolant. There is a known issue with this car intake gaskets and that plastic manifold melting which lets oil mixing into your coolant. The repair is to replace the plastic manifold and gasket, make sure to flush your coolant and put then put fresh coolant into the radiator. Also they used plastic elbow connectors which should be upgraded with aluminum ones.