Translation:You do not have a white blouse, Bob.
Each color corresponds to three specific letters. For example...
z r k (blue)
b y d (white)
b n y (brown) etc..
Each color has masculine and feminine gender assigned to them based on the location of the three letters.
Masculine: a 2 _ _ a _
Feminine: _ a _ _ a 2
Fill in the blanks with the three letters from a color to observe its masculine or feminine form.
Furthermore, the gender of a color is determined by the object it applies to when used as an adjective, not the person you are speaking to.
I hope that helps.
Arabic has very many different "dialects" in the different Arabic speaking countries. That's why we speak about di-glossy (people know two languages) in these countries. One is the spoken variant the other the official Arabic, written in printed material and used in radio and television.