LED Neon DJ Storefront Creation

Hello everyone!

I'm planning to create a kind of DJ booth display using neon lights that I can program and change colors with an ESP32.

Since I don't have a big budget, I'm looking to minimize my expenses and am therefore searching for the right components and parts to buy.

I plan to buy WS2812 LEDs so I can control them with the ESP32 and then put them in silicone diffuser tubes.

I'm contacting you because I can't find good, inexpensive silicone tubes. What shape would make a nice neon sign? How many LEDs per meter should I use to avoid visually gaps in the neon?

Thanks in advance for your advice and/or any useful websites/items that might help with this project!