[pdftex] possible metapost inclusion bug

[Patrick Riley]

Klaus Guntermann writes:
 > In the process of creating the files to be included there is an
 > optimization which does not specify the color of any picture item, if
 > it is black and all previous items have been black, too.
 > This has the advantage that you can change the color of all items if
 > they are all black, just by changing the current color before you
 > include the picture. We have used this (and therefore classified this
 > as a feature) to include the same picture all black for a printed paper
 > version or in a different color to highlight it on a slide, using the
 > same picture representation.

xfig has a color "Default" as well as a color black. Are these
distinct colors? If so, it would seem to me that the default color
should behave as you suggest, and black should always be black.

Thank you.

-- 
Patrick Riley
Fourth Year Ph.D. Student                                 
Computer Science Department, Carnegie Mellon University     
http://www.cs.cmu.edu/~pfr