Are you trying to scan into Acrobat? See if there is an updated TWAIN driver for your scanner. This should work, but Acrobat relies on the TWAIN driver to do all the communication with the scanner hardware, and if something gets lost in the process, the scanner may not get the command that it's supposed to scan in color.
Is this on a Mac or a PC? On Windows, you may have to try a custom scan to see if you can force the color mode.
Karl Heinz Kremer
PDF Acrobatics Without a Net
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