I am trying to create a book cover by using PSTricks. I follow the source from here :http://tug.org/pracjourn/2007-1/robbers/robbers.pdf (page 22). When I compile, it annouces the error that :
! Undefined control sequence. \c@lor@to@ps l.29 ...tyle=solid,fillcolor=Maroon](0,0)(13.24,9) The control sequence at the end of the top line of your error message was never \def'ed. If you have misspelled it (e.g., `\hobx'), type `I' and the correct spelling (e.g., `I\hbox'). Otherwise just continue, and I'll forget about whatever was undefined.
And the error is in fact at the line :
Please tell me what I should do? Thanks in advance.