(adsbygoogle = window.adsbygoogle || []).push({}); 1. Extract your profile off of your hard drive and save it to your desktop make a backup if you do not know what you are doing!
Partition3 > Content > Your Profile > 00010000 > Drag and drop!

Open your profile with a hex editor
Search for one of your custom class names
In my case "AAM16AA"

"FIND"

2. Now this is where it really starts!
Here are the hex codes for colour:

Red----------------------^1
Green-------------------^2
Yellow------------------^3
Blue---------------------^4
Cyan--------------------^5
Pink----------------------^6
White--------------------^7
Default Map Color-----^8
Gray--------------------^9
Black -------------------^0



I'm going to change my M16 Class Green, so we need to change it in the hex editor!
You need to change the AA to ^2 like so AAM16AA - to - ^2M16AA
You can delete the two last A's when you load up COD4, I added them because I was gonna add buttons to each!


Alright so thats how you add colour, you can only have one color for each custom class!
Another thing is that if you add buttons you can not use colour.

3. I didn't forget about the buttons don't worry!

Now search for your next Custom Class, in my case AAMP5AA

Here are the Hex Codes for buttons

A Button-------------------01
B Button-------------------02
X Button-------------------03
Y Button-------------------04
LB Button------------------05
RB Button------------------06
Left Stick button----------07
Right Stick button---------08
Left Trigger button-------09
Right Trigger button------10
Dpad Up-------------------11
Dpad Down---------------12
Dpad Left-----------------13
Dpad Right----------------14



So lets add two B Buttons to each side!
Change 41 which is the letter A's Default Hex Code to the left!
So AAMP5AA= 41414d50354141---To---02024d50350202

Change

4. Now Hit File>>>Hit Save
Open Xbox360Calculator>>>Hit File>>>Hit Open>>>Find Your File>>>Hit Open>>>Hit Tools>>>Hit Calculate Hash Blocks


Drag And Drop The Hexed Profile Into Xport360 Or Xplorer360 And Hit Yes!
There Your Done, Now Do Whatever You Want To Each Class!

R3 and L3 i thnik is 15 and 16 , but i not sure ^^"