bmw e90 coolant color

I've bought few months back bmw e90 lci with automatic tranmission.

Wanted to do whole fluid change thing in my car (steering, break etc.) And
then coolant.
There is marked on coolant container that it was changed 3yrs ago. Fine, but
im not sure about the color.

Engine oil is at max level since I changed it 2000miles ago, didn't change a
bit since then.

Coolant cap is clean, fluid doesn't seem oily. But it is white.
Didn't have any warnings/overheat problems even on highway speeds.

Probably going to change this fluid asap, but wondering if I could check for
anything else before.

Adding pics of coolant fluid