Okay…we all know that purple is the most heinous of colors because of its tendency to fade and change colors. The best way to get around this is to dust whatever it is that you want to stay purple.
I dusted these gumpaste hydrangea filler flowers to use on a wedding cake, and even though they’re small, the impact is large once you add them to the cake in a bunch.

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Dusting gumpaste flowers for depth of color.

These hydrangeas started out lavender. I dusted them first with a lighter purple/lavender color.
Then you dust the center with a little darker purple. For these I used French Lilac and Grape Crystal Colors dusts.
Make sure that when you dust the flowers you don’t extend the color all the way to the edge of the petal, and that you keep the darker color mostly in the center. But a little variation is good because no two flowers are the same anyway.

Use a big, rounded, fluffy mop brush like a puffy paintbrush to make sure that the color isn’t too concentrated in one area.

Here’s the before and after of the non-dusted and dusted versions. By layering the color the purple looks more natural, and since it’s petal dust it won’t fade.

Use multiple colors of filler flowers.

This cake had dusted gumpaste hydrangeas on it, so you can see how the different depths of color make the bunches more realistic.
When you mix colors in a bunch of filler flowers it usually works better, because it mimics what happens in nature. It’s very unusual to see any flowers that are only one color in a bunch of them.
To see more wedding cakes with hydrangeas, click here!