hi nyann , i think the best this to do to know what goes good with vampire relax is figuring it out by your self by going to the torishop (in the toribash window not on the website) and try the colors ,

I never knew I could do this!
Thank you!

Vampire and imperial looks pretty decent.
It's not common, but it's decent.

I think Toxic and Vampire would be pretty cool.

marine
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or orc??

hunter is good thats what i sometimes use.
i would also like to suggest void but its too expensive.
Pure could also be good.
you could also leave the relax at its default color.

it all depends if you have a texture.

The colors black, grey, and white match with anything. Here ae your choices:
Black-[Hunter, Void, Demon]
Grey-[Quicksilver, Platinum]
White-[Pure]

Yup, I suggest hunter, crimson, mysterio or cobra.
If I was you, I should not take a Blue relax with Red Force.
Also, what color are your limbs/textures?

I settled for Hot Pink Relax in the end, It looks nice and sexy ^_^

Thanks for the help guys ^^