Look at your blocks as if it was one central hexagon (white) surrounded by six Petals that look like a cut diamond. The name of the block is 'Texas Star Flower', an early American pattern. Here is a link to a blog that shows how it is laid out,
http://gwensquiltbarn.blogspot.com/2...-quilt_19.html
When you think of your quilt in term of HEXAGONS, you will find a very pleasing arrangement, like Grandmother's Flower Garden quilts. As for your need for more solid pink and solid blue Triangles, I recommend that instead of trying (in frustration) to match the pink perfectly, think in terms of Pinks (plural) and Blues (Plural) Select new yardage in three tones, so you have three pinks that ALMOST match, and three Blues that are close in color, then you can mix them up and not feel uneasy, it will look as if you WANTED it that way. I'm eager to see your finished project. You have a treasure there.