You can't but know that if you can capture the emotions of the audience as well as their minds, the play will work better, because it's a narrative art form.
Tom StoppardAutumnal -- nothing to do with leaves. It is to do with a certain brownness at the edges of the day ... Brown is creeping up on us, take my word for it ... Russets and tangerine shades of old gold flushing the very outside edge of the senses... deep shining ochres, burnt umber and parchments of baked earth -- reflecting on itself and through itself, filtering the light. At such times, perhaps, coincidentally, the leaves might fall, somewhere, by repute. Yesterday was blue, like smoke.
Tom Stoppard