Hi,
I have just planted 10 Ornamental Pear - Cleveland Select trees down a long driveway. The trees where a glossy green before I planted them and have since turned a red/gold colour since planting. I am aware these trees turn this colour in the later months of autumn, but have seen others of the same species in the same area which are still glossy green. Just wondering if I should be worried.
I wouldn't be worried. Transplantation is a stressful time for plants and can lead to leaves falling or colouring earlier than usual. I'd wait for Spring to check on the new growth before I started to worry