I have powdercoated legs white for funhouse. It matches the wooden support frame on the side on the cabinet and against the blue of a FH it looks awesome! Red is too much. Match the rails to the cabinet color same as the lockbar and with white legs it will look amazing. But it is all personal taste so do what makes you happy and forget everyone else. lol
My brother runs a powdercoater so I have an 'in' and as stated by charlstonscpins there is more shades , styles and examples of powdercoat than you can imagine! I did a black with colored flecks in it for my STTNG and it looks like stars in space on the hardware incl. the coin door. Looks incredible.
There is also a stainless steel look alike that looks much better than met silver or near chrome which goes funny with clear powdercoats .
I have done EM stuff in that stainless steel 'look alike' ......because color powder coat just looks wrong on some of those classic older games and it turned out really good...You almost cannot tell it is powdercoat until you get right up to it.

I will grab you a picture of it with white legs. I stand by my recommendation of white legs and same color blue as cab for lockbar and rails or leave the rails and lockbar if nice and just do the legs white. Seems odd until you see it.
Wh20 and whirlwind and slugfest all look great with white legs. Torpedo alley looks good with white too.