Velocity Smoothed with Heiken Ashi
This is a velocity smoothed with Heiken Ashi smoothed. Don't really think velocity needed much smoothing but seems the ha smoothing may have mellowed it out somewhat. Added fill and alerts. The fill will change colors depending on the lines moving closer together or moving further apart. The alerts are one the lines crossing.
ps) forgot to mention the indicator is using the ha smoothed step feature which gives the indicator a stepped like appearance, like the second screenshot below.