You may be on to something here. Like the purplish hue on the back. Is there a little yellowish hue on the gill plates? For me a little darker blue upper back and a deep blue almost dark violet backbone and just a touch of redish at center mass would sweeten the deal. Seems like Excalibur Fat Free Shads came in a pattern very close to yours...can't recall the name but it killed the bass all spring and summer long.