The .ply format file generated after successfully running the code does not contain color information

[YTLStudio]

The .ply format file generated after successfully running the code does not contain color information

[ltrgoddard]

Try viewing in a different renderer, e.g. SuperSplat editor. I initially thought the same thing when viewing in macOS Preview.

[SalamankaKit]

I recommend an add-on of Blender, named 3DGS Rendder if you use blender as your default tool. It works well for importing model and render it with color.