trim

Hi My interior is a little bit destroyed (by pre-owner), and I'd like to repair it. I don't want to make all new upholstery, but some of trims need to be changed (especially in cargo). And I have to buy the same kind of material "by the yards", but I don't know the name/symbol/number of colour...

Does anyone know if the clips shown in this image can be bought and replaced? I bought a used 2005 GMC Sierra Z71 Crew Cab and the person who had it before must have taken the panel off and broke the bottom two clips holding the door on Ideas anyone? Thank you! ~ Jeff