Never save the printer environment with the report. Never!

>Came upon this while converting a few Reports to Color. Specifically am using a Color Postscript Printer Driver to create a Postscript file which is then converted via Acrobat Distiller automation to a PDF.
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>Noticed that some PDF's properly came out in color while others didn't. All Reports did not Save the Printer Environment. After taking a look under the hood, saw that the reports that properly printed in Color had a COLOR = 2 setting in the Expr Field of the first record for the FRX, while those that continued to print in Black & White had a COLOR = 1 line. Changing the COLOR setting from 1 to 2 corrected the problem.
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>How is the COLOR setting in the Expr field set? Don't see any setting field in the Report Designer. Was this determined by the Save the Printer Environment setting & Selected Printer on the 1st Save from the Report Designer? Once set, is there anyway to reset without going under the hood?