First, you will want to dye your coffee filters with food coloring. Add some water in a bowl and add the desired food coloring. Add a few drops and stir. I started with just red. Dip the end of your coffee filter into your bowl.
The water sort of wicks up and colors the entire filter. I then set mine on a baking sheet to dry. You can make as many of each of the colors as you would like. I chose pink, green, purple, and yellow.
I used the same baking sheet for all my colors and put a sheet of paper between each one. They did sort of bleed through a little. But the wreath turned out great so I would not worry about it if I was you!
I did a mix of red and blue to make colors like the purple above. I will note that when you mix two different food colorings you can kind of see each color on the coffee filter. In the image above, you can see the blue-ish tint on the tops of them. I thought that was extra cool so I ran with it. Allow your coffee filters to dry completely on the baking sheet.
Then, you will want to attach them to your wreath form. You can use any wreath form you desire but I do like to cover mine with strips of white cotton material. This makes it extra easy to just rip everything off when you are ready for a change and re-use the form. Then just put the eraser end of a pencil into each of the coffee filters.
Use a hot glue gun to attach them randomly into place in rows around your wreath form.
You will want to keep filling the coffee filter wreath until it is nice and full. Don't forget to also add coffee filters to the inside surface.
Once you have all of your coffee filters in place, you can hang your spring wreath right on your front door. You can add a loop of ribbon on the back for easier hanging as well.