I went with the threads under the teal column mostly.
Pale green 18 mesh canvas
I used #822 in ecru. I couldn't find #837.
I used size 5 except in the 2nd octagon I tore it out and used size 8. 5 was just too big.
I also used the smaller size of ecru in the background.
I never used any dark red/violet. I never saw where to use it.
Then when I was done I saw it and wondered how it got left out.
Instead of Rainbow Gallery Designer's Dream I used Medici #8426.