What is the meaning of "look" here? You look good in blue.
Thanks
Meaning that when you wear a blue set of clothing, you show a pleasant image.
When another person looks at you, and you are wearing blue, they think that you are pleasant or pleasing to look at.
Other examples:
She looks good in that dress.
You look good with short hair.
You look good in a short hairstyle.
You look good in braids.
He looks good in a tuxedo.
My wife looked beautiful in her wedding dress.
She looks scary with that makeup.
It (the weather) looks nice today.
hope that helps. You should really look this up in a translation dictionary, it usually has a pretty direct translation to other languages I think.
Jesse