I ordered the gloss black bumper trim and diffuser and am very happy with the way it looks - Glad I made the swap. Here's a photo.
With respect to tips, locate the cover underneath and remove the screws (i had 7
) and used a 8mm socket wrench to remove them. After removal of the cover, you'll have access to all the clips that secure the bumper trim. Start from the corner near the exhaust and undo that clip - You might need to use a plastic trim tool to apply pressure. Once that corner clip is removed, you can slowly start removing the bumper trim by gently pulling toward the top of the trim, and pushing toward the bottom. I've included a video that I found very helpful. Feel free to reach out with any questions and I'll do my best to help you out.