@James, you need to adjust all regular previews, the card is way too dark and especially light designs look extremely dull and ugly. I assume you print on white paper, so, please, make the card white and the background a tad darker for some contrast. You may add perhaps a slight shadow. The in-situ look better. Thank you.
This YinYang is black & white, no background, so rest of ornament should be the actual cardstock color. And since white doesn't print, that half of the symbol should also be the cardstock color. The previews seem to show that the three different cardstock choices are varying shades of gray you can compare to the white ribbon they're hanging from. The previews on the tree, though, they all look white with no discernible difference to me. And the matte one on the wrapped present looks very white even though it is more gray in its other previews. So regardless of what the cardstock colors actually are, the previews aren't showing it consistently.
I know previews are never perfect with shading & shadows and such but for these I think it's important to know what the actual cardstock colors are - white or off shades of gray. If the cardstock is actually gray than yeah, that'll mute the colors of the design printed on it.
 Superfine Eggshell |  Pearl Ice |  Matte |
 Superfine Eggshell |  Pearl Ice |  Matte |
 Superfine Eggshell |  Pearl Ice |  Matte |
Where are you seeing the paper type described as white? I looked at the details when I first saw these on the homepage as I wanted to see how thick they would be. All I see in the details is this
Matte = 150# GPA Dull Cover
Superfine Eggshell = 120# Mohawk Superfine Eggshell Cover Paper
Pearl Ice = 110# GPA Pearl Ice Cover – Pearl Ice Paper
which tells me the thickness is equal to or greater than a postcard (110 or 120 depending on whether it's matte or semi-gloss) but if it's also telling me the color I don't understand what I am reading?
That's a really good question. To me, the main purpose of these would be as a novel Christmas card you would send to others instead of a standard card that would get thrown out or maybe displayed on the mantle or wherever for the rest of the season. At 5.25" x 5.25", it would be huge as a gift tag (and expensive for that purpose). That's even really big for a tree ornament. The ceramic, ball, acrylic and pewter snowflake ornaments are all only 3" or just under, and with the pewter one, the design area is only about 1.5". A 5x5 inch ornament would be obnoxiously big for a spot on a tree you've probably already decorated before receiving it. And if people wanted a commemorative ornament for themselves, wouldn't they buy a real ornament that would last through the years instead of a cheap postcard-thin paper ornament? I don't know but I personally see these as a novelty card that the recipient can easily hang somewhere if they're the type to display their collection of Christmas cards received. I also see these as maybe catching the interest of businesses that send cards to customers and would like something that stands out from the bland run-of-the-mill folding cards that go straight to the trash when I get them from my dentist and insurance agent and ...
Outside of the holiday season, I bet people can come up with all kinds of alternative uses for these (if they become available in other than xmas shapes) but for right now, I personally would put them in the Christmas card category.
Anyways, I know this thread is only five days old so I am being impatient, but I am really hoping for a Mod to confirm here about the cardstock colors & image previews. I designed one today I want to order about a dozen of but I don't want to have to buy a sample of each cardstock choice to check the colors.
(ETA: I would put them in the Christmas card category assuming that's the use you've designed them for. If you've designed them to be a low-budget ornament instead, then the ornament category would of course be a better choice.)
