PS: you might want to have a quick look a at this link for blues
Blue Paint Choices
Back in the day Robert Logan showed me a GT40 (Roaring forties) that was painted in Dodge Viper blue - which just looked smashing!!! Unfortunately I didn't get any photos.
It may have been a custom mix with pear & metallic flakes?
You could check with the roaring forties website for an idea... but pictures are don't do it justice.
Roaring Forties - Replica GT40s