It's all down to personal taste, i agree that that pic looks shit but i actually do think that plain old silver aluminium looks cool,but my fazer seems to have this colour on the engine as standard so happy days, ive got a few bits n bobs from pro bolt now but i keep it all silver aluminium as my bike's silver & it's in fitting with much of the standard fittings.
I got sent the latest pro bolt catologue & there arent many bits they dont do but it's a thin line between tasteful & tacky,one bolt too much & it tips the scales either way.