Howdy
The short answer is no.
First off, let's get our terms straight. I have not seen a real blueprint in probably 30 years or so. A blueprint was the process where an original line drawing, drawn with pencil on white vellum, was reproduced as a negative, with the lines showing up as white on a blue background. Since the development of pen plotters and modern laser and ink jet printers, nobody has used the blueprint process for years.
Anyhoo............
What you want are measured drawings, or technical drawings. These will be complete mechanical drawings with all necessary dimensions and tolerances included to manufacture the parts.
You can do an easy google search by entering Colt Measured Drawings or Colt Technical Drawings, and clicking on images. You will get lots of hits. Unfortunately, none of them are complete measured drawings with enough dimensions to actually make any parts.
You will also get hits on patent drawings, which will not help at all, patent drawings only show how a part or assembly functions, not how it is made.
Is this related to the question you asked about a year ago relating to fitting an unfinished cylinder to a frame?
The very best reference you will find anywhere about this is by buying this book:
http://www.gunbooks.com/colt_sa.html
Yes, it is expensive, but it is absolutely the best book on the market. Unfortunately, even this book does not have complete measured drawings for building parts for a SAA from scratch, but it is chock full of many measured drawings that will help, plus all the repair hints for making parts fit.
You can also find this book on amazon.