May I help you , sir ?   Yes , please . I'm looking for a cotton polo shirt .   Any particular colour ?   Not really .   How about this one ?   I like the design , but don't particularly care for the colour . Do you have that in other colours , too ?   Well , they come in white , pale yellow , aqua , red and green . Will a white one do ?   Yes . I prefer white - and may I see a pale yellow one , too ?   Why , of course . Let's see ... White ... Pale yellow . Here you are , sir . 