Nah, no way dude youre full of it fa sho...haha
I see it like this...The overall shape and character of the part should be taken into consideration. Engine cases, sproket cover, fenter struts...all good things to show some reflection in.
Then theres just parts that dont need that much attention. The cam cover to me is one of them. Its not a matter of "going along with related parts" Its a matter of visibility and how much each piece gets.
Right now the stock grey cover is bright and shinny and sticks out too much and thats why its ugly. Its not that it clashes with the chrome