To get colored custom classes you need
If you don't have your Call of Duty 4 Save Data do that.
If you haven't plug your Flash Drive into your PS3 and copy the save data.
•Plug your Flash Drive into your computer.
Open it up so it shows all the files.
Make a PS3 file and in that PS3 make another one SAVEDATA all caps.
Now unplug it
Plug it into your PS3 and under Save Data Utlity
Copy the Call of Duty 4 Save Data
Unplug it.
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Plug your Flash Drive into your Computer
Go under PS3>SAVEDATA>BLUS30072-AUTO-
Find GRADO_MP
under GRADO_MP find set customclass 1-5
where it has this "Name of class"
in front of the name "^1Name of class" Now it will be
Name of class^1 is Red
^2 is Green
^3 is Yellow
^4 is Blue
^5 is Teal
When done save the document and unplug your Flash Drive.
Put your Flash Drive into your PS3 and copy the Save Data from
your Flash Drive to your PS3
Go online under Custom Class and it will be the color you choosed.