HLC MA is a simple Moving Average which compares x period close and hlc3 averages and takes the greater one. So, it's a pretty fast Moving Average. It's also color coded. Green, white, and red used for up trend, possible correction or transition area and down trend, respectively. It's smoothed by using a simple method, color of the indicator only changes when its value higher or lower than its n period earlier value. By doing this, HLC MA manages to be fast and and less prone to false trend changes.