This process is similar to how to edit a hidden player into the roster. You will need the NBA 2k11 Shoe editor which chrome has generously designed or you will just need to know what the shoe color is

Example- the shoe color to the far left bottom corner (black is in the top left corner) the color is like a teal...that shoe color is "FF 00 FF 99" Assign the player you want to edit this color, this will help you find the player in the HEX edit program you are using
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yanks126ws

i used chrome305's nba myplayer thread as a reference(i credit this process to chrome305)... it has pics so it will make it easier for me to explain to you

what i do is i take a CAP and i assign it a certain color shoe. I then make or use a Myplayer and i give it the same exact color. I export it to my laptop and then i use the shoe editor and u load your myplayer (.cmg) file in there and it gives u a value
(video/ thread will walk you through this also)

open up...

yanks126ws