The simple answer is no! This is a very poor laying technique and not all all suitable for laying paving as the stone will absorb the pattern of the mortar bed and this will appear on the surface on the stone. It will also dry unevenly each time it rains. 

If paving has been laid using this technique, it's possible that even lifting and relaying the paving will not solve the problem as the marks may have permenantly stained the stone, however it may be worth at least attempting this approach first.