Adjusting the Neon Light Colours

I felt it was important to get some neon lights into my scenes as it would add a bit more interest and difference between the materials being used. Also one of the materials the Futurists used was neon tubing! If the garden was getting dark these would also light it up, unfortunately I can't show this but they still look nice glowing in daylight.

I have been experimenting with possible colours for the lights but some just didn't seem right to me. I finally settled on the last image in this post.