Choose 1 colour scheme .
Naturals– browns is an example. Keep to this.
Next choose the paving slabs to match this.
Setts are small pavers for paths etc.
Perhaps the gravel should be able to take children on it.
2 or 3 materials is a good choice.
Don’t forget that a good path or patio is best laid on a hardcore base .
Again a good landscaper will do the job properly.
A good idea is to use a metal edging between the gravel and surrounding soil.
This stops movement.
The finished product should blend together.