The plot style column in Layer Manager is for when you are using Named Plot Styles not Color Dependent Plot Styles. To convert your drawing from one to the other, type CONVERTPSTYLES at the command prompt.
Tim Corey
Delta Engineering Systems
Redding, CA
Tim Corey
MicroCAD Training and Consulting, Inc.
Redding, CA
Autodesk Gold Reseller
New knowledge is the most valuable commodity on earth. -- Kurt Vonnegut