Gundam ms in pocket yellowing

[LurkerX]

hi all,

i just acquired the whole set of ms in pocket off ebay everything is ok however, the v & f91 gundams have a significant amount of yellowing on them i guess the previous owner had them displayed where the sun can reach them.

in any case, i've tried "mr. clean ereaser" with marginal success i was considering sanding it with some super fine steel wool good idea???

or

maybe i should just get some gundam markers and "marker" the damn things.

suggestions anyone???