Finished size: 28” wide x 38-1/2” long.
77 rows + 3 border rounds.

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A: Lt Plum
B: White
C: Yellow
D: Blue
E: Pink
F: Green

I started with a shorter chain and only did the repeat of R6-9 once for each color rather than twice as in the pattern.

1/2/22:
with A, ch100, R1-13 (6-1/4” x 26-1/2”)
B: R14-17 (8” wide)
C: R18-29
B: R30-33 (15-1/2”L x 26-1/2”W)

1/3/22:
D: R34-45 (21-1/2”L)
B: R46-49
E: R50-61 (29” L)
B: R62-65

1/4/22:
F: R66-77 (36”L)
B: Border R1-3