朋友们.帮改一下公式

DIFF := EMA(CLOSE,12) - EMA(CLOSE,26),COLORFFFFff;;
DEA  := EMA(DIFF,9),COLOR00FFff;;
MACD := 2*(DIFF-DEA), COLORSTICK;

ma1:if(ISLASTBAR,2*DIFF-ref(DIFF,1),refx(DIFF,1)),SHIFT1,ColorffFffF;
ma2:if(ISLASTBAR,2*DEA-ref(DEA,1),refx(DEA,1)),SHIFT1,Color00FFff;

我想让这个公式.多出来的一天的线.用别的颜色.