The main page is in another language, but if you use just these ones, you can see every paint color in a little paint chip, along with the number and it's 'proper' name! Sorry if someone already found this, I thought it was really neat. Here's the link to '55, change the year to go through them or use the numbers at the bottom of the page.
http://www.cadillac.extra.hu/szinkodok/55-paint.htm