SPZ v3 testing dataset has weird colors

[Meakk]

Describe the bug
bonsai.spz is the testing data for SPZ v3 but it has weird colors.
I think it comes from the data itself, so not a F3D issue, but let's make sure it's the case and replace this test dataset.

To Reproduce
Steps to reproduce the behavior:

1. Open the file using f3d --config plugins/native/configs/config.d/10_native.json testing/data/bonsai.spz
2. Notice the green and blue gaussians

Expected behavior
We should not have blue and green dots.

System Information:

• OS: all OS
• GPU and GPU driver:

F3D Information
Paste the content of f3d --version or f3d-console.exe --version on Windows:
3.3.0-RC1

Additional context
Add any other context about the problem here.