Concrete imprint shall be more expansive compare to normal tiles.
There are 3 methods to add the coulour
Method 1 : Mix the colour pigment with the ready mixed concrete than lay and stamp.
Method 2 : Lay normal ready mixed concrete, pour colour pigment on the surface than stamp
Method 3 : Lay normal ready mixed concrete to certain thickness of the slab, then lay the remaining with coloured ready mixed concrete than stamp.
The prevent crack, make sure the sub strate is properly done and expansion join is introduced at the right interval.
Basically concrete imprint for method 1 and 3 can last very long, just you might need to reapply the sealer and sealant over the time.