You could use small diameter black cable sleeve over the wire as it runs through the hood, down to the harness it is zip tied to and also to clean up the last bit of wire. I will probably do this and if I do I will post pics.
It's not like people are going to be constantly under your hood and the finished product, although ALOT of work, looks awesome in my opinion and really sets my truck apart.
I also finished the paint job by wet sanding 2000, 3000, 5000, polish and wax. It's kinda hard to tell in the pics, but it matches perfectly.
I just bought this. https://www.amazon.com/dp/B07FW86XV6/ref=twister_B07FW38SF8?_encoding=UTF8&psc=1