Blushiningham Palace is a smidget deeper than what I'd call mid tone, but it's by no means dark no matter how you layer it. It's a shimmery mauve rose, the shimmers are the same color as the base.
I'm a bit underwhelmed by the shade, it's a really basic shade- the shimmery finish is also a bit plain. Would imagine this would be good to be layered under other interesting topcoats though.
Under more yellow lights:
Overall 3/5. I think it's pretty cool toned and look better on pale skin.