卖线改为黄色线条

编写要求：

解答：

?网友求助：

买线:EMA(C,2),COLORRED,LINETHICK1;
卖线:EMA(SLOPE(C,21)*21+C,42),POINTDOT,COLORYELLOW;
买:=CROSS(买线,卖线);
卖:=CROSS(卖线,买线);
DRAWTEXT(买,LOW-0.1,'▲Ｂ'),COLORF00FF0,LINETHICK5;
DRAWTEXT(卖,HIGH+0.1,'▼Ｓ'),COLORWHITE,LINETHICK5;
STICKLINE(买线>=卖线,LOW,HIGH,0.1,1),COLORRED;
STICKLINE(买线>=卖线,CLOSE,OPEN,2,1),COLORRED;
STICKLINE(买线<卖线,CLOSE,OPEN,2,0),COLORGREEN;
STICKLINE(买线<卖线,LOW,HIGH,0.1,1),COLORGREEN;
STICKLINE(CROSS(买线,卖线) OR CROSS(卖线,买线),OPEN,CLOSE,2,0),COLORRED;
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