Melt candy. Melt lavender, blue, green, yellow, orange and red Candy Melts candy, separately, in decorating bags. Cut small point off of decorating bag. Place pretzels on cooling grid over parchment-covered cookie sheet.
Decorate color bands. Pipe 3/4 in. diagonal bands in lavender, blue, green, yellow, orange and red. Tap grid gently to smooth and remove excess candy. Chill until firm, about 10 to 15 minutes.