Pushing out Rainbows

Another eaxmple is this larger opening orifice with rainbows flowing out.

I wanted this one to look kind of an easy flow, I need to look at what a pressurised flow looks like. The rainbows came out quite bright but it was the image I had in my head. I just think that maybe using real rainbows from peoples windows could be more effective.

I am going to ask families I know if they can send me photos of their rainbows and even ask for some if they no longer want them, the only problem is the size of the some of them, as you can see from the above image, theses images can be rather large.