function preMain(){
    setPriceStudy(true);
    setStudyTitle("Stochastic Bar Painter")
    setColorPriceBars(true);
    setDefaultPriceBarColor(Color.grey);
}

function main(){
    if(getBarState() == BARSTATE_ALLBARS) nStochDifference = null;
    if(getCurrentBarCount() < 14 + 3 + 3) return;

    nStochDifference = stochK(14,3,3) - stochD(14,3,3);

    if(nStochDifference > 0) setPriceBarColor(Color.green);
    else setPriceBarColor(Color.RGB(192, 0, 0));

    if(nStochDifference > 0)
        drawTextAbsolute(0, TopRow1, nStochDifference.toFixed(3), Color.RGB(0,192,0), 
                        null, Text.PRESET|Text.CENTER, "Courier New", 12, "StochDiff");
    else
       	drawTextAbsolute(0, TopRow1, nStochDifference.toFixed(3), Color.RGB(192,0,0), 
                    null, Text.PRESET|Text.CENTER, "Courier New", 12, "StochDiff");
    return;
}

/*      
NOTE: You could add another number next to it if you wanted to.  The key is for 
"StochDiff"and "Var2" to have different names that are static...unlike 
"StochDiff"+rawtime(0) which will put a value on every bar.

if(nStochDifference > 0)
    drawTextAbsolute(-15, TopRow1, AnotherVar.toFixed(2), Color.RGB(0,192,0), 
                    null, Text.PRESET|Text.CENTER, "Courier New", 12, "Var2");
else
    drawTextAbsolute(-15, TopRow1, AnotherVar.toFixed(2), Color.RGB(192,0,0), 
                    null, Text.PRESET|Text.CENTER, "Courier New", 12, "Var2");
*/