see 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.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
see the colour of someone's moneyreceive some evidence of forthcoming payment from a person.
Farlex Partner Idioms Dictionary © Farlex 2017