Ulrike Fischer wrote:
(x)dvipdfmx is the successor of dvipdfm and half of the documentation is in the dvipdfm documentation so texdoc dvipdfm texdoc dvipdfmx gives the two part ...
Well, thank you for that, Ulrike, but whilst "TeXdoc dvipdfm" sheds additional light on the matter, it /still/ doesn't define (as far as I can see), * \special {color push [<color>]} * \special {color <color>} * \special {color pop} which were the specials that I was seeking to use following Jonanthan's 2005 advice. As it turns out, the \special {color push} that he mentions no longer works, but \special {color push <color>}) does, as do the other two, yet I cannot find out where their behaviour is defined other than in the source code. /Surely /they must be defined somewhere, and not just have sprung into existence of their own volition ... Philip Taylor