There seems to be a problem with the class TestColoredTexture form the JME3 examples collection. The screen is black and there is no sphere geometry visible.
Could someone approve this?
I only see a quad in that test class, no sphere. Are you looking at the correct one?
It also renders fine for me (using the latest nightly).
I noticed that updating the SDK using Help -> “Check for Updates” does not update the project “JmeTests”.
To get the latest test class in the SDK as found under http://code.google.com/p/jmonkeyengine/source/browse/trunk/engine/src/test/jme3test/material/TestColoredTexture.java I had to delete the project “JmeTests” from my file system and create a new project from the template project “JME3 Tests”.
So, in the latest version of TestColoredTexture the colored texture really works 
Theres a difference between trunk/ and a stable release of a software @mathias4u. You can enable nightly if you want (…to break your install occasionally).