This shop does all/most of the body exterior work on the local high-end rides:
www.berlisbody.com. They'd be able to do a perfect repair & color-match for your front-bumper's lip, or refer you to who can.
www.jeffsautobodyrepair.com is also recommended by many, locally. Though, you don't need quote/unquote body-work/repair (their expertise). Worth a call, nonetheless.
I got a tuner/import guy who does high-quality paint/body-repair on the cheap, but his shop is real rag-tag/shabby. He's good w/ metallic paints w/ flake/pearl/etc' & clear-coat. On my previous NSX, he color-matched a door & my front-bumper's valance & after-market lip ('91 Berlina black NSX w/ 75k miles at the time). We can head-over there together for an estimate whenever you're down. . .
I think your bumper just needs spot-fixed at the scrape/crack & then blended in w/ the surrounding area by a skilled/proficient/experienced paint-guy (ie. color-match/blend the Silverstone on repaired/primered area, then "cut" the paint by rubbing/wet-sanding & blend to match the rest, finished off w/ a clear-coat/polish). . .