Display different colors in Drop down list box

I am working on a stationary / computer jobs application.

This application has a drop down list box which displays different center names in different colors so as to help the operator to fix priority in their printing work.

for example standard red ,green ,black and blue are the colors in which the center names should be displayed .

need help on this script.

Thanks
Note: this is being worked in asp.net 2.0 with javascript and sql server 2000