Made defaults nicer numbers
Honestly, 457 and 271 are pretty ugly numbers, so now the defaults are 460 and 270, which are way nicer numbers.  Well, that actually completely depends on whether you prefer numbers that are divisible by 5/10 or numbers that aren't divisible by much.  But anyway, the window got 3 pixels wider and 1 pixel shorter.  I would say no noticeable difference is done.