Most of the frames were different colors when I first started the project. I went to the thrift store and looked for frames of all sizes. I knew I wanted a large frame to paint green or blue to be in the middle. This is the break down of the rainbow.
Red: A prepainted square red canvas
Orange: a 5×7 frame
Yellow: 8×10 textured frame
Green: a three opening collage frame
Blue: a large 20×20 frame
Indigo: an 11×14 frame
Violet: a 5×7 frame
I wanted most of the frames to be open, but I did want a few pictures on the mantel. I made a large rainbow tutu and took pictures of my girls in it for the 5×7 frames. Find the tutu information here. My 7-year-old and I made a large Luck watercolor for the middle frame, find the tutorial here. I sanded and used acrylic paints to paint each of the frames, making sure the largest frame would be in the middle and the 5x7s with the pictures in them would be near the ends. You could fill in all the frames or leave them all open. I love the look with some of the full and some of them open.
Overall, I am completely in love with the way the mantel turned out. It is bright and colorful, it has pictures of my sweet girls on it and a fun watercolor that I made with my oldest daughter. It is the best of all my worlds!