How can I change item's style at runtime using J2ME Polish?

I'm trying the following code but I'm unable to get it working.

Style style = new Style();
style.addAttribute("background-color", "#FF0000");
item.setStyle(style);
有帮助吗?

解决方案

Style style = new Style();                        
style.background = new BorderedSimpleBackground(0xF0F0F0, 0xFF0000, 1);
item.setStyle(style);
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