Prices and location
The colors means the price is different for those seats. Typically center seats close to the stage are priced higher then those at the back or side of the theater. The stars indicate that the view is partially obstructed due to support column, lighting, or some other building/hall object that cannot be moved. You will still be able to see the stage but a small part maybe hidden. It doesn't say it but this is also sometimes the case when you purchase seats on the outer edges of the left or right side.
I believe the stars are obstructed view seats, not major but there may be a supporting column between you and the stage.
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