“If you’ve ever run into this annoying little Illustrator problem, it can be very frustrating, but it has a simple fix. Every so often you may find that no matter what color you select, Illustrator converts your selection to grayscale…”
“All you have to do is set your color palette to something else, like RGB or CMYK. Now you’re good to go. Personally, I have no idea why this problem has made it all the way to CS4. If I wanted to fill a shape with a gray, I’d choose a gray.”
Source: Illustrator 101: The Annoying Grayscale Color Problem
When preflighting, FlightCheck can easily catch if your colors are set to Grayscale, RGB or CMYK. On top of that, FlightCheck can pre-flight AND package Illustrator – your entire Adobe layout or design! To package Illustrator, FlightCheck includes all fonts used and placed images, and puts them all into a folder with a copy of the original .AI file, even compressing it!
To learn more about how FlightCheck can be used to actively preflight Illustrator or your vector based artwork jobs, watch this video demonstration here:
Package and preflight Adobe Illustrator artwork!