There are a few things you need to do in order to create a rainbow in Fifa 15 for Xbox 360. First, open up the game and select “Options” on the main menu. Then, under “Graphics,” select “Rainbow.” Next, under “Settings,” set the following values: -Brightness: 100 -Color: Red, Green, Blue, Yellow -Gamma: 2 -Vertical Sync: On -Output Quality: High
