Can do this with spray on concrete. Have the existing path sprayed to match.
Spray on concrete finish
I wouldn’t die in a ditch over this
This gives you a feel of the look from a distance
This, softer side? Laid on top of concrete and the gaps filled?
Could you lay these on a concrete path? Fill the gap with soil or gravel
Not hard edges
Different kinds abutting
This? - in the same colour as the concrete
What about something like this in a colour matching the concrete?
Potential leading up to concrete path
This with increasing amount of stone leading up to existing path
One colour non stop
Crazy paved path