Translation:Do you have a blue blouse, Reem?
Why has blue gone from "azraq" to"zarqaa"?
Not sure what you mean? It was taught as زَرْقاء (azraq) and it seems to be the same here. Maybe I'm missing something? https://imgur.com/user/ccfuk2019/posts
This is the masculine vs feminine forms of the colors. Every color (since they are adjectives) have a masculine and feminine form.