Jumping ahead now by four colors.
Color #7 is a medium olive underbase, again mostly covered up by other colors. Mainly in the tall grass and trees
Color #8 is a medium green, prominent in the foreground and trees.
Color #9 is a dark brick red, with very little coverage; just a few spots and some texture here and there.
Color #10 is tan. It's most visible as a highlight texture in the foliage, and in the background at left.
The tan has just gone down in this pic. You can see some of the red scattered in the grass, and in exposed brick. The olive underbase is already nearly all covered up.
Color #11 is a darker green. Here's that state, as we print the next color.
Color #12 is a very transparent gray, and very important to get just right. Its main function is to cover over the white-painted exposed interior walls and give dimension to the mortared-over brick, but it is also all over the place as a highlight color. It needed to be transparent enough and light enough to let the light blue texture in the center show through, without reading as white.
Here are some films on the table. The one flipped over backwards is color #15, dark gray. The spotty one with minimal coverage laying on top of it is #13, pink 1.
Skipping ahead a bit, here is the state of things including color #13 (pink 1) and #14 (pink 2.)
Both only show up on the thistles in the foreground. In retrospect pink 2 was probably not necessary, as I could have struck out the underbases under pink 1 and relied on transparency to give me the highlight pink. I thought the second pink would give me more brightness and control in the highlights but in the end I don't think it made much difference.
Here's color #15 (dark gray) being taped and patched