see the colour of someone's money
US /siː ðə ˈkʌlər əv ˈsʌmˌwʌnz ˈmʌni/
UK /siː ðə ˈkʌlər əv ˈsʌmˌwʌnz ˈmʌni/

1.
看到某人的钱, 确认某人有钱
to make sure that someone actually has the money they claim to have before you do business with them
:
•
I won't sign the contract until I see the colour of your money.
除非我看到你的钱,否则我不会签合同。
•
The landlord wanted to see the colour of their money before agreeing to rent the apartment.
房东想在同意出租公寓之前看到他们的钱。