thus i decided to mix my own blurple that would straddle that line between blue and purple ever so elegantly. i think i succeeded, even though my franken is not as vibrant as the polish in Scrangie's swatch (i believe because mine has a touch of white added to it). it definitely switches between blue and purple depending on the light source. the formula is pretty good too, and 2 coats is perfect for an opaque finish.
edit: i made a second bottle and listed on my Etsy shop for sale!