I see a white windows, a black laptop, a brown table, a grey/gray phone, and a laptop bag. I see white windows, a black laptop, a brown table, a grey/gray phone, and a laptop bag.

Haha, pick one! There are two spelling of the word "gray". It's silly, I know...

she have aIt is two colors: black and blue. It is two colors: black and blue.

Here I believe you are referring to the laptop bag. English doesn't use gender pronouns for inanimate objects so the correct word would be "it". If you were referring to a woman or a girl then you would use "she".