Well, one can always sew six things that co-ordinate. I mean, others can :-).
But I think one of the beauties of the plan is that if you stick to it for a year you get a very diverse wardrobe that still co-ordinates. So I would tend to treat your teal dress as an extra. I don't think of teal as a neutral, and I think you aren't planning on making teal trousers to match, so it doesn't work for the layering top. It could be a "top", if you'll wear it over your neutral trousers, which is a nice idea, and under the matching cardigan.
Just a viewpoint, not meaning to discourage you at all, since as you know I think you sew beautiful stuff.
PS Janis, *I* am the slowest sewist on the planet, thank you very much!
PS, reading this, I also know what my plan has to be:
bottom: houndstooth trousers - almost an oatmeal from a distance (DONE)
layering top to match: houndstooth vest
top to match: heathered cotton oatmeal jersey long-sleeved top
top to complement: cream wool jersey long-sleeved top
2nd top to complement: red rayon jersey long-sleeved top
---> I have in mind the Ottobre Women's pattern with a turtleneck and flounces, and the other with a gathered V-neck and sleeve flounces. I will de-flounce part of them.
jacket: dark stone colour. I actually have a purchased jacket that co-ordinates perfectly so I will use that and focus on completing the other items. Bonus, it comes as part of a matching suit.
I have a lovely brown belt with red detail that will go beautifully, and I'll look into getting a necklace as well to pull things together.
I am actually excited about this! Maybe my lost sewing mojo will return now! 3 tops from similar patterns and a vest -- I can do that!!!