Thanks again, fab ladies - you are the best ever!
I hear you, Carole, it isn't always very simple to interpret a formula. Here's what I did:
I started with the image of the ten pieces on the BR site. A closer look told me that six were neutrals (blazer, skirt, jeans, Breton sweater, trench, leopard shoes). That meant that ANY neutrals could be used as substitutes. Since I've been focusing on buying essentials in neutral colors lately, it was fairly easy to pick substitutes from my closet. I only have one suit, so it had to be black, and I don't own leopard shoes, so I chose brown booties instead.
The colored items are mustard yellow, burgundy and fuchsia. Mustard and burgundy are yellow and red with a lot of black in them, whereas the fuchsia is more pure. They are more or less analogous (next to each other in the color circle). My colors are different, so I looked at the texture and shape of the two tops, and tried to emulate them: The mustard patterned top has a drape, and the fuchsia top has short sleeves. I have a reddish brown top with drape neck and short sleeves. I also have a sleeveless blouse with a floral pattern in violet, black and mustard. It could substitute the mustard BR top. My only cropped & colored pant is the dark mustard yellow one. It happens to match both tops very well. I have a green wrap dress with similar shape as the mustard yellow one. Voila, my ten starting pieces.
I then analyzed the outfit pictures and realized that the stylist had added a denim shirt, an extra pair of shoes and a few accessories. I did the same, but iIdon't have denim shirt, so I used a steel gray silk blouse instead. I also added a pair of black oxfords. You can always swap items in a capsule as long as they are similar in shape and/or color, they don't have to be the same at all.
The main focal point in creating a versatile capsule is to make a selection of distinctly different patterns, shapes and colors and neutrals - different enough to create varied outfits. They don't all have to match, because the neutrals tie them together. I really like what Mo says about making a looser interpretation of this capsule: Swapping the trench for a leather jacket, the suit for a pant suit etc. if you keep about half of the items in neutral colors and add one floral pattern, one stripe or plaid, one in a pop color and a few accessories, you can create a lot more than the 12 outfits shown here from 10-12 pieces.
I made a note in Evernote about the process, where I placed my photos next to the model pictures. Have a look if you like:
https://www.evernote.com/shard.....51404f80fb