Yoke; colour ways 15 and 17 (see last slide)
Beginning with 17 and slowly alternating with 15. You would need to hold it double for the pattern , check your gauge.
I held them double with other yarns (nothing special just a similar solid shade) but only because I had just one skein of each of these two colours and needed to reach pattern gauge. If I had unlimited yarn I would have preferred to hold them double with themselves.

I used two main colours essentially but made up of 4 yellow yarns, two shades each consisting of two threads ( so held double) and two red, held double.
For yardages I have combined the yellow yarns of the same type.

MC Red
Norwegian Wool 367y / 335m (134g)
Held double with Rosario’s Piopardo ( colour 5)
678.5y / 620m (188g)

MC Yellow
Rosario’s Piopardo ( colours 15 & 17)
212y / 194m (59g)
Held double with a merino single ( various colours)
310y / 284m (79g)

CC also two yarns held double
Rowan felted tweed 225.38y / 206m (59g)
Qing merino single 132y / 120m (33g)
Both in black

Underarm to cuff 41cm ( 6cm ribbing )
Underarm to hem 29cm ( 6cm ribbing)
Yoke depth 21cm

Modifications
Neckline cast on in contrast colour & knit two rows according to pattern before changing to main colour.