I bought the red Japanese material many months ago always intending to make something but as it was only a FQ I didn't know what! (oriental cranes red/gold 100% cotton).
I found the green/ black taffeta (forest green/ black lightweight taffeta) in a charity shop in town a few days after I saw the OJS post and it just seemed to be right.
Pit of a panic towards the end as I hadn't got any lining material but eBay came to the rescue (green oriental blossom cotton poplin).
The bag ended up with 52 cut pieces after I cut the zip placket and although it was not so difficult when I actually got going it was more of a plod than a sprint.