Style by different attribute tags, for example:

 
# lightTab [flat="false"] {
Border: 1 px solid blue; 
} 

# lightTab [flat="true"] {
Border: 1 px solid red; 
} 

But found adjustSize have a bug, as follows:

 
//UI - & gt; LightTab - & gt; AdjustSize ();//call before setting properties, style doesn't work 
The UI - & gt; LightTab - & gt; SetFlat (true); 
The UI - & gt; LightTab - & gt; AdjustSize ();//call after setting properties, style to work