*Warning - Technical stuff*
Light from interstellar objects comes in three flavors. It is Red from Hydrogen Alpha (HA) gas, Blue from cooler Hydrogen Beta (HB) gas, and Teal/Green from ionized Oxygen (OIII). These three color sources make up the Red/Green/Blue light our eye registers when looking at these types of objects.
Normally the cooler Hydrogen Beta is found in mostly the same places you will find Oxygen (OIII), so you can use the data from OIII and double it to serve as green and blue for the color separation process, and get a result close to the original. This is the basis of the Two Filter - Three Color process in use in this image. The Green and Blue channels are composed of OIII light, and the Red channel is from Red light. I did it this way because I was not satisfied with my Green and Blue filters and did not yet own a Hydrogen Alpha filter.
It seemed to work out OK. Sometimes Rocket Science really isn't Rocket Science.