I'm trying to set the resources of xclock program but it doesn't work. I
especially want to set the XRender options but all I have is default
black on white.

The xclock app is compiled against Xrender lib, as ldd shows
libXrender.so and I have the following lines in

#include "XClock"

#ifdef RENDER
XClock.Clock.hourColor: rgba:7f/00/00/c0
XClock.Clock.minuteColor: rgba:00/7f/7f/c0
XClock.Clock.secondColor: rgba:00/00/ff/80
XClock.Clock.majorColor: rgba:7f/00/00/c0
XClock.Clock.minorColor: rgba:00/7f/7f/c0

Any help appreciated.