input price = close;
input KeltnerLength = 13;
input VolumeFastLength = 1;
input VolumeSlowLength = 20;
input ADXLength = 10;
input SMALength = 8;

def KeltnerSMA = Average(hlc3, KeltnerLength);
def AvgRange = Average(high - low, KeltnerLength);
def VolumeOsc = (Average(volume, VolumeFastLength) - Average(volume, VolumeSlowLength)) / Average(volume, VolumeSlowLength);
def ADX = reference ADX(length = ADXLength);
def SMA = Average(price, SMALength);

plot KeltnerHigh = KeltnerSMA + AvgRange;
plot KeltnerMid = KeltnerSMA;
plot KeltnerLow = KeltnerSMA - AvgRange;
plot VolumeSpike = VolumeOsc > 0.5;

KeltnerHigh.SetDefaultColor(GetColor(4));
KeltnerMid.SetDefaultColor(GetColor(4));
KeltnerLow.SetDefaultColor(GetColor(4));
VolumeSpike.SetDefaultColor(GetColor(1));
VolumeSpike.SetLineWeight(3);
VolumeSpike.SetPaintingStrategy(PaintingStrategy.BOOLEAN_POINTS);

DefineGlobalColor("Up", Color.UPTICK);
DefineGlobalColor("Neutral", Color.GRAY);
DefineGlobalColor("Down", Color.DOWNTICK);
AssignPriceColor( if ADX > ADX[1] and price > SMA then globalColor("Up") else if ADX > ADX[1] and price < SMA then globalColor("Down") else globalColor("Neutral"));