菜鸟求助，围棋界面颜色如何更改，谢谢
import java.awt.*;
class TestGridLayout extends Frame{
public static void main(String[] args){
TestGridLayout tgl=new TestGridLayout();
tgl.setTitle("围棋界面");
tgl.setSize(300,300);
GridLayout grid=new GridLayout(9,9);

grid.setHgap(0);
grid.setVgap(0);

tgl.setLayout(grid);

for(int i=0;i<=80;i++){
tgl.add(new Button());
}
tgl.setVisible(true);


}
}我想把围棋棋盘的颜色设为黄色，请问怎么修改程序，谢谢

[解决办法]

Java code

        for(int i=0;i<=80;i++){              Button btn = new Button();                         tgl.add(btn);            Color c = new Color(255,255,0);                            btn.setBackground(c);        }