the colour of someone's money

see the color of (one's) money

To view the money that one will pay with in order to verify that they have it. Sure I trust you—but I still want to see the color of your money so I know you're good for it.
See also: color, money, of, see

the colour of someone's money

If you want to see the colour of someone's money, you want proof that they can pay for something, usually because you doubt that they are able to. Note: `Colour' is spelled `color' in American English. Then he ordered another drink and I said to him: `Let's see the colour of your money.' I thought he wouldn't have any. He made a mental note never to enter into conversation with a customer until he'd at least seen the colour of his money.
See also: colour, money, of
References in periodicals archive ?
Until he sees the colour of someone's money, that isn't going to happen.