Happy Birthday Rainbow Party Supplies and Decor

Bring color and joy to every celebration with our Happy Birthday rainbow lettering collection! Featuring vibrant gradient rainbow text with a bold black outline, this customizable collection includes invitations, party supplies, decorations, and even gift ideas. Available in versatile background options—white, black, or yellow—to match any theme. Perfect for birthdays of all ages, these designs make party planning bright, fun, and unforgettable.