It'll just look like a normal engine bay if the hoses are in black.
Best bet is to give the engine bay a good clean and remove as much dirt as possible. It'll look much more presentable and won't look like a "bling bling train wreck".
If you want to "tart it up" give the engine cover a re-spray (if its needs it), clean up/remove the rust from the top-mount intercooler cover (if you have one) and maybe look at restoring the exhaust shield as they normally get quite corroded and dilapidated.
These things are much better options in my opinion. :thumb: