RX-78-2 Gundam=R1+R2+X will change it to a black and white mobile suit.MS-06 Zaku II=L1+L2+X will change the color to a light shining green. R1+R2+X will change the color to a whitish color. L2+R2+X will change the color to a Gold Desert Force color.
If you enter this code with other mobile suits, you will change the weather of the mission stage and maybe even the difficulty.