What example of figurative language is this?

I would say that the figurative language used is OXYMORON.

This is because of the term "banana ripe and green". The words ripe and green with regards to banana is contradictory. We know that a banana is ripe because its color turns from green(unripe) to yellow.

Other examples of oxymoron that we encounter every day without us knowing are: 
-same difference
-deafening silence
-appear invisible

Oxymorons are used for dramatic effect. It is used to add flavor in the speech and provide entertainment to its recipient.

The issue of racism greatly inflience herbecause by then there was racio discrimination in the south this affects her such that she will grow up favouring people of her race and undermining the othersracism will build herin earlier days the people of south were oppressed by the whites since they were considered slaves or subject yo the whites.so as a result of this the whites children grew up bearing in mind that they were more superpower than the black