they are not 45's (well 99% sure)
In everywhere apart from the USA the plates which are colour coded are as follows
red = 25kg or 55lbs
blue = 20kg or 44lbs
yellow = 15kg or 33lbs
green= 10kg or 22lbs
3 plates in USA is 315, 45lb bar and 6x 45lb plates
in non USA its 44lb bar and 6x44lb plates