I have the "Raptor Performance Group" dine in the matte blue metallic on my truck. Everyone, including myself, thinks it looks purple. The matte metallic does have a tendency to change colors and I bet it would look awesome in the sunlight on the hood! Matte metallic colors are awesome and they do "pop." Definitely better than a regular matte. The only thing I would be hesitant about is the tuxedo black. It tends to look a goldfish color in the light and I wouldn't think the blue would go with that. Wrapping the whole truck in the matter blue metallic would be awesome!!!
Wait till you see the pictures of my truck now
The whole thing is basically purple or blue, depending on the light