Text Colour Problem

I’m new in Blender and I have to make a game as a project for my subject!

I’m making the menu for the game, everything was okay except the color of the text, the texts are changed to the color I wanted, but when I push P-to run(play). It only appear white and smaller. Do anyone know how to fix that? It take me 2 days to figure out but I still not find how to fix. Thank you!

p/s: I’m still ESL student and new in Blender so “please” explain most details as possible as you can. I’m using Blender 2.68a.

The text object color is located in the Object tab in Object color, the material color does not is used.