I’m having a hard time setting the second color . How is that done in 2.3?
The Colorbands?
Cycle through the panels, what you’re looking for is probably hidden somewhere.
Martin
It was the “NOR” button on the texture tab in materials panel. (I think)
The NOR button would not have much to do with color. Make sure the COL button is selected. If you are wanting to add a second material you will need to assign it through the Edit buttons (typically used to add a different material to selected vertices on a mesh).
Do you mean the COL slider that was in the bottom right of the material screen?
If so, you can now find it under the “Map To” tab in the texture settings.
BgDM
I think he means the RGB sliders for the texture channels. They are behind one of those menus on the right in the materials window. You have to click on the ‘map to’ tab.
It was more obvious in previous versions, but now I see it 
Why don’t you all stop interpreting his question, but instead ask him to rephrase it? 
your knowledge of the force is indeed great, obi wan kenobi. :Z
No, I’m Darth Vader… Ton is Obi Wan Kenobi
Blasphemy! Ton is Yoda 
Martin