I am a neon light artist and have been struggling to solve the challenge of taking quick and easy photos of my pieces. The tubes themselves always appear white, when in reality they are very vibrant colors. Ideally, I would like to be able to take photos with my iPhone but can flex some photo touch-up skills if needed.

My issue is clear in the first photo of this link, showing the tube as white when it is actually more of a reddish tone seen in the third image. https://www.instagram.com/p/CNbbYtoD2TJ/?img_index=1

I am not able to replicate the correct look very often, and it is a challenge as an artist trying to get attention.

Any tips are welcome! Thank you!!