The use of colors to show the disjointed state of the mind is evident in the sentence.
Step-by-step explanation:
Alice Walker's statement given here is a good example of the use of prose to convey a feeling and a psychological state stemming from certain issue in someone.
The person here is panicking over the dress that is obviously too much for the hot weather.
But it begins to hurt the speaker in the way that its brights hurt like the sun.
This comes with a feeling of inadequate femininity or forcing of femininity on the person who retaliates by feeling disgusted by it revealing their psychological state of turmoil.