B) That's a weak blue on a gorgeous bike. I'd paint mine a little, um, ..brighter!
C) Take your laptop to a DuPont supplier & show them the pictures, they can work from there.
D) If you can find if the color is an auto color, then having the year & model, you can get the color in any automotive system.
ie; 1981 Porsche 911 Targa Sky Blue ='s
DuPont the color is 6X523
Sikkens it's 3F421
PPG it's 74392
(these are not actual numbers for a Porshe Sky Blue, just examples for illustrative purposes.)
If you have questions about refinishing your frame, don't hesitate to PM me.