Version: 0.5.1 (using KDE KDE 3.5.1)
Installed from: SuSE RPMs
There does not seem to be any way to change the grey background color (the one used for the "canvas" behind the pages, not the background of the pages themselves).
Thank you for your bug report or feature suggestion.
The "KPDF" application is no longer maintained, and all tickets are now closed.
We recommend to switch to the "Okular" application.
Due to the high number of bugs/suggestions in "KPDF" we are not able to go through all of them and verify if they are still valid in "Okular".
That's why are we asking you to help us by checking if your bug/suggestion is still valid in Okular and if it still is opening a new bug/suggestion against it.
Thank you for your effort in making KDE better :)
(This is an automatic message from the KDE bug triaging team)