color differences between design area and preview area

[Bannouna]

The fisrt image is the invitation in the design area which is the same as my original design. 

The second one is the invitation in preview area (it looks so dull)

this is the link to this invitation :

https://www.zazzle.com/burgundy_flowers_gold_wreath_black_wedding_invitation-256057669443082805

[PenguinPower]

I'd say they are giving you an accurate preview for the available materials. Give that the option that would give you the most saturated look for this product is only semi-gloss (not glossy) it doesn't look unreasonable.