Happy Days Jelly Roll by Sherri & Chelsi for Moda 37600JR. 40 strips 2-1/2" wide. 100% Premium Cotton. Click Here to View all Fabrics in Jelly Roll. The Happy Days collection is inspired by the bright colors and flowers of a spring garden. With coordinating stripes, dots, and prints in medium and small scale, this collection is perfect for creating quilts that will evoke joy in our homes. With a rainbow of colors mixing soft coral, grey, and aqua, with bolder hues of navy, citrine, and red, Happy Days features a palette that delights the senses.