XColor *pickColor(const RrInstance *inst, gint r, gint g, gint b);
void reduce_depth(const RrInstance *inst, pixel32 *data, XImage *im);
void increase_depth(const RrInstance *inst, pixel32 *data, XImage *im);
XColor *pickColor(const RrInstance *inst, gint r, gint g, gint b);
void reduce_depth(const RrInstance *inst, pixel32 *data, XImage *im);
void increase_depth(const RrInstance *inst, pixel32 *data, XImage *im);