The LeBron X is available now in
NBA 2K13. Unfortunately, there seems to be an issue when editing them. Not everything on the shoe can be changed.
Can't edit the colors for the airbag, midsole
(only a couple of them work), laces, bootie and tongue
(only a couple of them work), midsole speckle, swoosh
(only a couple of them work), swoosh border
(only a couple of them work), flywire (a few of them work), logo color
(a couple of them work).
UPDATE: Try this to get it to work.
The Lebron has 7 areas with multiple colors. The editor has a region/color limitation of 8.
Some areas have to share colors (per the shoe design from nike). Easiest way to see it is to change all areas to the same color, and then try to edit them again.