How does Samuel Beckett use imagery in Krapp's Last Tape?

In the opening pages of the play, the reader learns that Krapp is dressed in "Rusty black narrow trousers too short for him," a "Rusty black sleeveless waistcoat," a "Grimy white shirt open at neck, no collar" and a "Surprising pair of dirty white boots, size ten at least, very narrow and pointed." This outfit, combined with Krapp's "White face," "Purple nose" and "Disordered gray hair" makes him appear very much like a clown. This image of Krapp accords with what the audience eventually understands to be Krapp's earnest but foolish desire to make his mark as a writer and intellectual. Some clowns provoke laughter from their smiles and buffoonery, but others work by attempting to earnestly perform some serious task with absurd results. Krapp resembles this second type of clown, as he is thoroughly convinced of his own importance and seriousness but is always undercut by his absurd appearance. The fact that Krapp eats bananas and almost trips on one of their peels adds to the audience's perception of him as a man who, despite his attempts to prove otherwise, remains clownish.