Pull out the seat, pull out the carpet and go to ACE hardware. They carry gel cote and the pigment color for the resen ,put some card board under the car mix up your resen with the pigment and pour it on the floor. Mix it hot so it sets up fast and it is fixed .Put some glass over it and set in place before you pour on the resen if needed.
When it sets up it should be the same color as the car if you mix the pigment right .
you may need to remember your school colors to mix it right color roygbiv to mix it.
red
orange
yellow
green
blue
indego
violet.
Mix color to get the right color pigment in the resen.
ACE is the place.
good luck and take your time.
I think we have all done this at one time or another.If you spend enought time with a vette.