Here is another source:
https://everestautomotivemarket.com/custom-mixed-paint/porsche/porsche-ocean-blue-l3az-l3ay-e1/?variation_id=1004311
Most modern paints can be applied to all properly prepared exterior body parts. Get a 2k clear coat if you want it to last. I was just quoted $350 for a quart of Deltron DBC mixed to match L3AZ (professional quality base coat) from my local PPG dist.