I shall be giving talks on the esoteric dimension of the okesa. Many people are busy sewing now a seven stripes robe now, many more will soon start a rakusu. Fugen suggested I should focus on this and...he is right.
The reading of Kesa Kudoku and Den E could help you, you'll find these chapters in Dogen's Shobogenzo.
You may access the Nishijima Cross version on line and read the two chapters:
https://www.bdkamerica.org/digital/dBET ... 1_2009.pdf
See you in a couple of weeks