What I expected to happen was...:
Particles will change depending of the carpet's color

What actually happened was...:
When I walk on a carpet, the particles that are actually appearing are not of the wool's color, they are of the block's color under the carpet

Steps to Reproduce:
1. Put some carpet (The color doesn't matter) on some blocks
2. Run on the carpet zone
3. You'll see particles from the block under the carpet.
For example :
I put some orange carpet on cobblestone, when I run on the carpet, the particles are from cobblestone, no orange wool particles.
P.S.: Sorry for bad grammar