In addition to Jeff’s reply, as the designer, you would want your client to sign off on the final changes before sending it to the printers anyway. The last thing you want is to be left holding the baby.

Call me paranoid but nothing’s getting anywhere until the client signs off on it.

Trish

If I’m not using duotones Placed from Photoshop, why wouldn’t I change the Spot Color in InDesign? You can change the Spot to some other Spot Color as quickly as selecting the Swatch in the Swatches panel, pressing the Trash icon at the bottom of the panel and selecting the replacement Spot Color from the popup menu.

Why do I feel this is important enough to mention?

Murphy’s Law!

Why leave anything to chance? As Murphy said, “If anything can go wrong, it will.”

The artist should always prepare files in a way that mistakes can’t possibly happen. The last thing an artist ever wants to hear from a printer is “Oops! I don’t remember you telling us to change the Spot Color.” Or the ever popular, “Your PostIt note must have fallen off the job jacket.

Years ago, when I first was thinking about becoming an Adobe Certified Instructor, I called a printer friend to ask him if he thought it was a good idea.

He answered, “Hell yes! If all files came into our prepress department put together like yours, our lives would be a lot easier.” Printers should not have to “fix” something that’s is so easy for the artist to do themselves.

All my best,

Jeff

And, of course when working with duotones, watch that ink density