Trying to make a simple smart rgb color changing chase?

[2dwc]

This should be simple to do but for some reason I can't figure it out.  Running S5 Pro.

Using one port (single strand of RGB pixels) off a pixie 8,  I'd like the lights to start as a solid color (orange) and then over a period of say 20 seconds I want to have the string change bulb by bulb in a chase effect to left to right to purple.  When it reaches the last bulb on the far right, I'd like the chase to start at the left again but this time go from purple to green, bulb by bulb.

Can anyone help point me in the right direction on how to do this?

Thank you!  

 

[Jimehc]

 

[2dwc]

Thank you!  I wasn’t even sure what to search for, that is exactly what I’m trying to do, I’ll give it a try!