@FeyRaine you are so complimentary but I'm afraid you ahev me confused with someone else. Perhaps the very talented @Kassaundra ? I haven't done a sample quilt of blocks or a reversible but i know she has.
Ooops my mistake, the samples were by Coldupnorth! another one of our talented crew of swappers.
As to the issue of to add blue or not to add blue, I'm going to go w/ adding blue

thanks for the feedback every one, I do think it will work and make my block choice easier to select w/ 5 colors.
I hadn't given it much thought when I picked the original 4 fabrics, but after spending several weeks looking at quilts & blocks online the idea of odd #s of colors per block is reminding me that somewhere back in an art class or some such that fits into some sort of graphic design rules.
Speaking of which this used book I picked up for $2. in trade credit is _really_ great! Tittled Scraps, Blocks & Quilts by Judy Martin. The cat & I spent a couple hrs w/ it & a cup of tea last night and I had a bunch of ah ha moments, there are full color pictures side by side of the same block done in 2 or even 3 color plans where you have to really look hard to believe it IS the same block. Just amazing. It is really helping me understand what I like & dislike in certain quilts, and giving me many ideas on where I want to go in my future quilts. If any of you happen on a copy of this book (from 1990) it is just a little softcover not even half inch thick but it has so much in this one book it is well worth getting. I have several other quilting books but none this good by far.