how to modify the ui of lx-games ?

[海鑫电脑]

I like lx-games lxsession, the same as doudou linux.

So, i want to change the background of lx-games, change the label name 
on the top, and add more application's icons to every label. Make the 
lx-games  have more games.So, how can i do?

Any ideas?
Thank u.