D is for decor and decorations
If you have a theme or color theme, you should use that theme for your decor and decorations.
I've been the wedding and event industry for many years, I've seen a theme "underdone" and I have seen a theme "overdone". For example, a Bride told me that she was going to have butterflies as her theme. She had a small butterfly on the front of her wedding invitation and she had a small butterfly in a floral bouquet on her guest book table. And to be honest with you, 99% of the people attending that Bride's wedding probably did not see either of those butterflies.