In Scene IV of the Poker Night in Tennessee Williams' A Streetcar Named Desire, what is the significance of the use of primary colours in the setting of the Kowlaski Apartment?

In the Scene of the Poker Night in A Streetcar Named Desire, the opening description of the living room as being romanticised by ‘primary colours’ is in stark contrast to the description of New Orleans in the opening scene of the play that is ‘muddy’, ‘black’, and full of ‘decay’ giving the notion of the Stanley Kowlaski apartment as a kind of liberating haven for the residents. This is particularly significant as we begin to consider an American pulling itself out of war and the need for citizens to find an outlet for self-expression under government surveillance.