I worked on the body shop side of the shop, but the paint shop had a camera they used to match any color. Now, this was almost 20 years ago and I can't for the life of me remember its name. We only used PPG if that helps narrow it down.My body shop uses a meter the measure the color on my Jeep so they can repaint the body part the same color.
They mix their own paint colors. If you want to match the bed liner, they can do.
If you want to match the TH hook colors they can measure a TH hook and do it.
I would probably go cheap and use red Plasti-dip.