How to color MAs on a study?!?

[glay]

Hi. Im new to efs. Im making everything with note pad (as to say hacking up other code). Im using this basic 8/21 crossover ema for backtesting right now. How do I make the 8 ema white and the 21 blue? They are both white right now. Thanks!

var fast = new MAStudy(8, 0, "Close", MAStudy.EXPONENTIAL);
var slow = new MAStudy(21, 0, "Close", MAStudy.EXPONENTIAL);

function preMain() {

    setPriceStudy(true);
    setColorPriceBars(true);
    setDefaultPriceBarColor(Color.white);
}

function main() {

    var f = fast.getValue(MAStudy.MA);
    var s = slow.getValue(MAStudy.MA);
    
    if(f == null || s == null)
    return;

    if(f >= s && !Strategy.isLong()) 
        Strategy.doLong("Crossing Up", Strategy.MARKET, Strategy.THISBAR);

    if(f < s && !Strategy.isShort())
        Strategy.doShort("Crossing Down", Strategy.MARKET, Strategy.THISBAR);

    if(Strategy.isLong())
        setPriceBarColor(Color.blue);
    else if(Strategy.isShort())
        setPriceBarColor(Color.red);

    return new Array(f,s);
} 

[ACM]

Geoff
You do it by adding a setDefaultBarFgColor() statement for each element of the returned array and assigning it to the appropriate element through the index parameter (see the link for the syntax)
The enclosed revision of your script shows you how you would implement it.
Alex

var fast = new MAStudy(8, 0, "Close", MAStudy.EXPONENTIAL);
var slow = new MAStudy(21, 0, "Close", MAStudy.EXPONENTIAL);

function preMain() {

    setPriceStudy(true);
    setColorPriceBars(true);
    setDefaultPriceBarColor(Color.white);
    setDefaultBarFgColor(Color.white,0);//colors the first element of the return array
    setDefaultBarFgColor(Color.blue,1);//colors the second element of the return array
}

function main() {

    var f = fast.getValue(MAStudy.MA);
    var s = slow.getValue(MAStudy.MA);
    
    if(f == null || s == null)
    return;

    if(f >= s && !Strategy.isLong()) 
        Strategy.doLong("Crossing Up", Strategy.MARKET, Strategy.THISBAR);

    if(f < s && !Strategy.isShort())
        Strategy.doShort("Crossing Down", Strategy.MARKET, Strategy.THISBAR);

    if(Strategy.isLong())
        setPriceBarColor(Color.blue);
    else if(Strategy.isShort())
        setPriceBarColor(Color.red);

    return new Array(f,s);
} 

[glay]

Thx! Worked like a champ

[ACM]

Geoff
You are most welcome and thank you for the feedback
Alex