I have a minor conundrum re. #knitting

Okay, so I have yarn left over from the #baby projects and the parent projects, and I want to #knit a small mitered square blanket like thus https://www.masondixonknitting.com/shop/mitered-square-blanket/ but without so much striping and clashing.

Right now, I could easily do two squares-of-four:

Red/purple with black, and green/turquoise with offwhite.

And then a border.

That would make an approx. 20x 38 inch blanket, which is an interesting size.

OR I could pick 4 more colors (1/2)