[求助]麻烦老师帮忙改一下指标 (文华财经WH6赢顺V6.7)

老师可以帮忙把下面这个指标改成  K线在20日界点线上方K线颜色是红K, K线在20日界点线下方是青K,麻烦了，谢谢

买线:=EMA(C,2);
卖线:=EMA(SLOPE(C,21)*20+C,42);
BU:=CROSS(买线,卖线);
SEL:=CROSS(卖线,买线);
DRAWICON(BU,L-0.1,'买');
DRAWICON(SEL,H+0.1,'卖');
STICKLINE(买线>=卖线,LOW,HIGH,0.0,1),COLORRED;
STICKLINE(买线>=卖线,CLOSE,OPEN,2,1),COLORRED;
STICKLINE(买线<卖线,LOW,HIGH,0.0,1),COLORGREEN;
STICKLINE(买线<卖线,CLOSE,OPEN,2,1),COLORGREEN;
散户:EMA(CLOSE,5),COLORWHITE;
操盘:MA(CLOSE,10),COLORCYAN,LINETHICK2;
界点:MA(CLOSE,20),COLORMAGENTA,LINETHICK2;
{本文来源:'WWW.CXH99.COM' }
LC:=REF(CLOSE,1);
RSI:=((SMA(MAX((CLOSE - LC),0),3,1) / SMA(ABS((CLOSE - LC)),3,1)) * 100);
//DRAWTEXT_FIX(C>O,0.01,0.9,0,' WWW. CXH 99.COM '),COLORRED;
//DRAWTEXT_FIX(C>O,1,1,0,''),COLORRED;
FF:=EMA(CLOSE,3);
MA15:=EMA(CLOSE,21);
日:=150;
昨前:=3;
高1:=REF(HHV(H,日),昨前);
低1:=REF(LLV(L,日),昨前);
H1:=高1-(高1-低1)*0.191;
H2:=高1-(高1-低1)*0.382;
H3:=高1-(高1-低1)*0.5;
H4:=高1-(高1-低1)*0.618;
H5:=高1-(高1-低1)*0.809;
顶:REFX1(高1,10000),COLORRED;
一0.809:REFX1(H1,10000),COLORYELLOW;
二0.618:REFX1(H2,10000),COLORMAGENTA;
三0.500:REFX1(H3,10000),COLORWHITE;
四0.382:REFX1(H4,10000),COLORGREEN;
五0.191:REFX1(H5,10000),COLORYELLOW;
低:REFX1(低1,10000),COLORRED;