UFO changing colour, direction and maybe shape.I was looking out side our window and saw in the distance a small shape flashing white across the sky. At first I naturally thought it was a plane but the whole thing was flashing. At this point it was moving left. Then the whole thing started to flash red. I thought this was a bit strange so i got up to have a better look. Still moving left. Then it changed a really bright white colour and it was about 4 or 5 times bigger than it had been before. I dont know if the actual craft changed shape or if the light was so bright that it made it look bigger than what it was but this could certainly not be a plane. After a few seconds it when back to flashing white in the smaller form and turned direction and headed to the right. Now i know this could not have been a plane because planes cannot chnage direction so ubruptly. After a while it headed in a direction diagonally down and to the left. It then started to flash red again. After it continued in this direction i lost sight of it because there were trees to block its view.