I have just gone out and had a look at 10:20 pm Northern England.....its an optical illusion....the blue does appear more towards the top right hand side, and slightly less on bottom left hand side of Moon.
If you look at the Moon out of the side of your eyes, the optical effect disappears.....also disappears if you look at the Moon with binoculars.
Optical illusion thats all....probably from the brightness of the moon.
Don't know what the two bright planets are with it though?