Very good pics and explanation, Cammy. My understanding is that splash x splash results in diluted splash, which you illustrated clearly, and it is considered a fault. And yes, splashes are blues. I also think that there are some who think their dilute splashes are lavenders, but they are entirely different.
What I'm talking about is also different. I had never noticed this difference until I saw the two birds side by side. Both had very distinct, strong splashing, but one's background was nearly white, while the other (mine) was quite blue. I feel sure both are blue, just different inetensities. I thought both werer quite pretty. I think I've just confused things, 'though.