This is a bottom up cardigan, low-sew, only sewn at the shoulder seams, then worked in the round for the sleeves.
This pattern used 2x50g balls of brushed acrylic for the cuff colour, 3x50g balls for the main body colour, and less than one 50g ball for the other 3 colours, using 8 x 50g balls for the whole cardigan, or 800m.