Are these guys safe to sunfade?

[Sawkinator]

Thinking of sunfading some marks off of:
-Moondancer
-Red Roses
-Medley
-Sunbeam
-Pony Bride (x2)
-Rosedust
-August Poppy
-possibly Glow? She looks a bit dingy, but I'm not sure if it's that or it's just what her normal color is

My main concern is the ponies with glitter symbols. Can you safely paint over them and remove it later without losing too much glitter? Some of them have lost a lot already (Moondancer's moons are just barely visible)
And are the blue/green ponies more prone to sunburn in general?

I also have a g3 Waterfire and Darling Dahlia with marks, but I don't see nearly as much discussion about how sunfading affects gen 3 ponies

[glitterball]

  cover ponies in cling-film and paint over the cling-film-covered symbols with acrylic paint -
you can continue to sunfade + then just peel off the cling film afterwards - so no need to worry about damaging the glitter!

[Safflower]

Glitterball's method works I don't think blue and green ponies are more like to burn, it's white ponies that are, like Quackers sometimes, Starshine sometimes, Gingerbread, etc. Blue ponies react very badly to acne cream and show damage a lot faster, so that may be what you are thinking of? Hope this helps

[lovesbabysquirmy]

Red Roses and Rosedust and Glow have fading pink hair so be SUPER careful!!!!

[Snapdragon]

OMG, painting over the cling-wrap... this is genius!! O.O Thank you for sharing!!