From the pattern description:
“…it’s a great way to use up leftover yarn.”

From the pattern:
“Each color is used for two rounds before changing to a new color. This design looks best when five colors are repeated in sequence. If you plan to use a different number of colors, keep in mind that an odd number of colors is best.”

Pattern is written and does not include any charts.
The 4-row slip stitch pattern is easy to memorize, and you only knit with one color at a time.