A (Naturally Colored) Rainbow Party

4 Reviews / 4.8 Average
Our team member Shawn recently put together a fabulous little “Rainbow Party” for her daughter’s birthday, and when I shared some of the photos on Facebook there was so much excitement that I asked her to share all the details with us. She's also sharing how to create a fun Watermelon Cake made with only fruit!
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Photos of a rainbow themed party using all natural food color dyes.

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My daughter asked if she could have a rainbow party for her 5th birthday this year, so I immediately got onto Pinterest and searched for “Rainbow Birthdays.” Many of them were filled with Skittles, jelly beans, lollipops, jello, and cakes made with artificial dyes. This was just not going to be okay with me! Did you know that artificial food dyes are derived from petroleum and require a warning label in other countries? I thought I can totally do this without junk food and dyes, so I got to work. Here’s a peak at the end result (with detailed instructions below):

My daughter is my fruit and veggie lover, so I knew I wouldn’t get any complaints by serving up a rainbow of colors with healthy foods. As we were looking for ideas on Pinterest, we came across a watermelon “cake.” She immediately fell in love! This is my child who asks me everyday when it is going to be “watermelon season.” She had her heart set on this cake, but I figured that if I didn’t at least have a “regular” cake her friends might not ever come back for another birthday party. So we had both.

The Rainbow Cake

rainbow cake

During the holidays I used my juicer to make a ton of pretty rainbow colored juices, which got me thinking. So I contacted a baker I’ve used in the past and asked if I could bring her naturally colored juices to use in a white cake she’d make for the party. She agreed, and I dusted off my juicer again and juiced a few carrots (for the orange) and spinach (for the green). I bought a can of beets and used the juice they were sitting in (for the red). I defrosted frozen blueberries (for the blue) and blackberries (for the purple), and put them through a mesh strainer. I had some turmeric on hand (for the yellow). She said she added the colors a teaspoon at a time until she got the right color on each one, and she also used this online tutorial for guidance. She made the rainbow and the sun out of fondant, and we didn’t eat those. My daughter had a string of butterfly lights in her room, so we borrowed a few for some added decoration. I even put a few drops of glitter glue on the non-edible butterflies to add some bling!

Watermelon Cake

Watermelon cake using only fruit for a rainbow themed party.

The watermelon cake was honestly not the easiest, but my daughter really wanted one.

Fruit Platter

Rainbow Fruit Platter

This can be made with a variety of fruits, depending on what is in season.

Here is what I used:

  • Red: 2 packages of strawberries, stems removed and berries sliced in half
  • Orange: 5 oranges, peeled and cut into segments
  • Yellow: one pineapple, cut into chunks
  • Green: 5 kiwi, peeled and sliced
  • Blue: 1 package of blueberries
  • Purple: grapes

Veggie Platters

veggie platter 1

I made two veggie platters because …well I just couldn’t help myself when I was buying all the vegetables. Again, feel free to use whatever veggies are available/in season or ones that you like.

Here is what I used for the first veggie platter:

  • Red: red cherry tomatoes and 1 red bell pepper
  • Orange: 1 orange bell pepper
  • Yellow: 1 yellow bell pepper
  • Green: 1 green bell pepper
  • Blue: Organic Blue Tortilla Chips (from Trader Joe’s)
  • Clouds: 1/2 of a head of cauliflower (blanched*)
veggie platter 2

Here is what I used for the Second veggie platter:

  • Red: heirloom Tomatoes
  • Orange: baby carrots
  • Yellow: heirloom tomatoes and leftover peppers (from the first platter)
  • Green: heirloom tomatoes, cucumbers peeled and cut into thin circles, and fresh green beans and broccoli (both blanched)
  • Purple: 1/2 of a head of small purple cabbage, sliced thin
  • In the center: organic regular hummus and chipotle hummus (from Trader Joe’s)

*To blanch any of these vegetables, bring a pot of water to a boil. Cook your vegetables for 3 minutes and then transfer to an ice bath immediately. Once cooled, remove from the ice water and lay on a clean towel to dry off. I blanched some of the veggies because my kids like them better that way – all my kids love broccoli, but won’t eat it raw.

The Decor

rainbow party table

I wanted to use the food and activities as the main focus of the party, so I assigned each girl to wear a different color of the rainbow. The few things I purchased from Target were rainbow plates, napkins, cups, glittery hats, and solid colored plastic table cloths. I left the table cloths folded and placed them in order of the rainbow, and I used a “Happy Birthday” banner that we already owned.


What do you do at a rainbow party? You craft! It is a favorite pastime at our house.

  1. Picture Frame Decoupage
    I bought unfinished wooden frames for each guest and put out Mod Podge, paint brushes, and LOTS and lots of fabric, tissue paper and scrapbook paper cut into pieces. The girls painted the Mod Podge on the frame first and then placed whatever pieces of the scraps struck their fancy onto the frame. A lot of Mod Podge was painted on top of the scraps to make a pretty, unique picture frame.
  2. Painted Canvas
    I bought each of the girls a canvas to paint, put out acrylic paint and paint brushes, and then let them go to town. Afterwards I kept all of the girls paintings and hung them in my daughter’s room to help her remember this birthday celebration with her friends.
  3. Tie Dye
    Last, we tie-dyed shirts. I bought each girl a white t-shirt and a tie dye kit. They picked out the design they wanted and we put the rubber bands on the shirts for them. The kits are really self-explanatory and helped with the instructions. The girls picked their colors and my husband did the dying since it would be pretty messy for 5 year-olds. I wrapped the shirts in a bag and they all took them home and washed them out the next day. I think they turned out great!
rainbow party crafts


I am big on being practical as far as party favors go. I find it a strange tradition to give out gifts to guests at a birthday party, but I am not going to be the one who stops it. The girls got to take home their shirts and their frames. I would normally think that this was plenty, but since I was feeling crafty I spray-painted cans with chalkboard paint. I bought water colors and Trader Joe’s Organic Fruit Strips to go inside the cans. I also made these cute little heart crayons. I have more crayons than the Crayola factory, so I had my daughter peel the papers off and break them into small pieces which she used to fill up silicon heart molds about half-way up. We placed the molds onto a cookie sheet and put it into an oven preheated to 200 degrees F. It took about 15 minutes for them to set, but I suggest you watch them very carefully. I used a toothpick to stir the wax a bit. When they are melted you can leave them on the counter to cool, but I was impatient so stuck them in the fridge.

rainbow party favors

In the end the party was a huge success.  If you’ve had a rainbow party or have other ideas for “rainbow” foods or activities, we’d love for you to share them in the comments below!

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Recipe Rating

  1. 4 stars
    amazing recipes, especially the rainbow cake. I followed the same recipe last Friday inviting my friends for tea wit this amazing cake, you made our day Shawn.

  2. 5 stars
    My 6 year old daughter absolutley adores rainbows! Her birthday is coming up next month and I’m going to for a rainbow themed birthday party for her. Thanks for sharing!

  3. Love this. Any more specific instructions/ratios on how to use juices for coloring cakes and frosting? The rainbow cake looks lovely, but it looks like the red layer is more of a pale pink. I tried to use pomegranate juice in frosting before and could only get to a pale pink – despite a lot of juice – which gets tricky with consistency. Never tried beets but worried about taste if I want a deep red color. This year I ended up using white frosting on my cake and then covering with freshly diced strawberries in the pattern I wanted. That worked better than the pomegranate juice. Now my almost 3 year old is requesting a purple cake. So how exactly do I make this happen with blackberries/blueberries and a mesh strainer? Thanks!

    1. Yes, the “red” did come out more pink than red, but we were all very happy with the result. When we used the beet juice you could not taste beet flavor at all. I used blackberries for purple. I used frozen and let them defrost before I put them through the strainer. We added it one teaspoon at a time until we got the right color. Since you are using juices for color they are not going to be bright and vibrant, but we are very happy with the way they turned out. Good luck :)

  4. Wow! Do you have to slam us with the annoying javascript for email data mining?

    Do you know how aggravating it is to have to X out of that? Especially those with who want to view by their smart phone?

    Please put an option on the side and give folks a choice please.

    Other than that, the recipes are fantastic.

  5. So thankful for this post! I have a little girl who will be 6 in November who has been asking about a rainbow party, since her last birthday! She is extremely sensitive to dyes so I was wondering how I was going to do this! Last birthday she wanted a pink cake (red is the worst!) So i used raspberry juice & it turned out pretty well. Thankful for the other ideas too!!!

  6. This post makes me SO happy! I am planning a rainbow party for my twin girls 4th birthday later this month and was a little concerned about how to make that cute rainbow layer cake. Thanks for the tips! Everything turned out really cute.

  7. I made a rainbow ice cream cake by putting fruit in a food processor and mixing with homemade whip cream. It was really pretty and yummy!

  8. Hi Lisa,

    I just saw this post on your Fb wall. This past weekend I had tried making pink cupcakes with beet juice from beets we had cooked for supper. We even let the juice boil after to try to reduce it. It looked like it was changing the cakes color but when we cooked them the cupcakes came out pure white as if we had not made any changes. Just wondering how you got it to work or if you have tried this before.? I have made red Valvet with beer purée and green ones at st Patrick’s with spinach before!

    Would be happy to hear yor tips!



    1. Amy Taylor (comment moderator)

      Hi Annie. No idea why the beet juice wouldn’t have colored the cupcakes. I’ve never had that happen. Hmmm? I know PH can effect color but not completely eliminate it. ~Amy

    2. Hi Annie,
      It sounds like you tried to use “juice” that you got from just cooking the beets in it, maybe colored water after cooking? I use an actual Juicer, a machine for just juicing fruits and vegetables, to get the beet juice I use for coloring and I get intense color from the very concentrated juice.

  9. I had a “Little Artist Party” when my daughter turned five which was rainbow themed. We did rainbow “splat” painting (big hit), handprint and footprint pictures, pin the brush on the artist (where they won rainbow sticker sheets), strung rainbow colored pasta on string for necklaces, and made rainbow-colored rice art. We had big bowls of fruit (one for each color of the rainbow), and rainbow-colored giant hanging pompoms made of tissue paper. It was great! Both girls and boys loved it. We made the dyed paint, pasta, and rice ourselves. They also decorated their own take-home bag using a rainbow stamp pad, large paper grocery store bags, and a sheet printed out with their names in rainbow colors.

    1. We also had rainbow colored aprons that I found online. The kids were so cute in them! Plus, with all the messy projects, it helped keep their nice clothes clean.