So... I know it's pretty straight forward. I could always use a multi-purpose wheel cleaner. However!!! I am curious about determining a couple types wheels.

-Chrome and Polished Aluminum (visual differences?)

-Painted silver or white aluminum vs. standard coated aluminum or steel. They look very similar.

I know to always ask the customer general questions, but I would like to get to the point where I can just stare at any wheel and be like: Boom! already know what type of wheel that is. I also know to always go with a general multi-purpose just to be safe, but this subject irks me by not knowing

P.S. I looked in the FAQ and How To's and didn't see any thread directly related to this. I think I may have posted a question relevant to this topic a month or two ago, but I don't think anyone gave visuals or a reference link.