[texhax] (no subject)

[Alexandru Scorpan]

Hi:

How do you \includegraphics in a transparent manner?

Case in point: I have a B/W pdf image, that I want to set on a yellow 
background, but make it appear as B/yellow, not surrounded by the white 
of the original.

(Note: going .gif not good, I am using pdftex.)

Next step:  How do I change colors while including, for example, to 
substitute blue instead of black?

Thanks,

Alex