[ros-users] no color shown in rviz

Hi,

I installed ROS on my ubuntu 10.10 system,
my computer is dell optiplex gx620.
I am using the openni_kinect, when I run rviz,
it shows,

[ERROR] [1297371552.336600216]: No techniques available for material
[PointCloudMaterial0BillboardSphere]
[ERROR] [1297371552.337862615]: No techniques available for material
[PointCloudMaterial0Billboard]
[ERROR] [1297371552.353709307]: No techniques available for material
[PointCloudMaterial0Point]

I can see black and white point cloud in rviz, without color. How can I get
the color shown in rviz?

--
Wei Liu
Research Scholar
Robotics Institute NSH1202
Carnegie Mellon University