need help locating 73 dart sport armrests

i'm not really sure what the difference is between parchment and white i think they are white but thats not to say that im right maybe you could explain the difference and i could try to figure it out or i could bleach them i appreciate the help

white is well "white".....Parchment is an off white/tan/beige color

they all need to be cleaned

The first pic is without the flash....the rest of the pics are with the flash.......I consider the washing machine they are setting on to be white.....and these 3 to be parchment in color.....all three have no rips or tears in the vinyl but the one is missing one of the locating pins on the back and has a crack in the plastic...The other two are good.....I would sell you all three if you want....You could use the one to practice on if you want to explore bleaching.....let me know