I created some sequences in HLS and imported them into xLights. In this example my "model" is a string of 18 Icicle lights. Each icicle is 8 pixels and the whole string is 144 pixels long. Attached is what the sequence looks like after importing it. You can see nodes 1 - 8 is icicle #1 and colored green. Icicle #2 is node 9-16 and colored red. The effect I'm trying to achieve is pretty simple, I want the icicle to "fill" from nothing or black to all 8 pixels colored green. This fill effect should happen over an amount of time, say 3 seconds. Can someone explain how I can achieve this? xLights has a ton of effect types but I'm struggling to find ones for simple scenarios like this one. The effect works if I hand edit each node but I know xLights does not really want us editing each pixel, so I'm hoping there's some way to replicate this effect.