You can have any color you want, as long as it's black.

Any customer can have a car painted any colour that he wants so long as it is black.

People can have the Model T in any color - so long as it's black

It is not the employer who pays the wages. Employers only handle the money. It is the customer who pays the wages.

One of the greatest discoveries a man makes, one of his great surprises, is to find he can do what he was afraid he couldn't do.

Whether you think that you can, or that you can't, you are usually right.