Assuming your 63 SDV Trim code (see Body Plate on top LH of Cowl) is 44, your Sandalwood metal dash is the same color as the exterior Bahama Sand. My car has the Sandalwood Interior and ordered the interior paint from TCP Global and it was almost a perfect match. I took individual panels off and had my painter spray them and it matched it very close to the rest of the dash.
Enter your model year and Cadillac to pull up the Auto Color Library and charts for your particular Cadillac.
Fill in for 1963 Cadillac and see Tech Sheets at bottom and select Acrylic Enamel, enter Light Sandalwood for color, 44 for Chip Formula Number, and 22129 for Manufacturer Paint Code.
This should be a direct link to the fill in page:
James. No 54 is still Sandalwood, just with the Leather Option. If you click on the Tech Sheet in lower left of the link you will see they both decode to 22129. You can enter either 44 or 54 and 22129 and will end up with the same color. Here is a direct link to the tech sheet: http://images.tcpglobal.com/chips/1963-Cadillac-pg02.jpg
I added the following link to this thread to our Help Page as I often get email asking for a source for interior paints: