The garment has a top – down construction. First is worked the collar in a ribbed pattern. Then the yoke, with a rectangle raglan by increasing in 4 corners. After the yoke is done, it’s divided into sleeves and body. The 3 parts of the sweater are worked separately.
A ribbing edge is added for cuffs and bottom hem.

For the Color Bomb Sweater I used left over yarn. As written in the Materials Section, I worked with many strands of yarn held together.
2 strands of DK weight yarn, category 3, or 3 strands of Fingering weight yarn, category 1.
I got in the end with a category 4, Worsted, Aran weight yarn. Considering that the sweater is worked with 8 mm crochet hook, you can use yarn up to category 5, Chunky.
Combine any yarn you have and feel comfortable to work it with a 8 mm crochet hook and then check the gauge.