Here is what I found out a few years ago from the CG historian's office.
The stripe was originally recommended by the design firm of Raymond Loewy/William Snaith, Inc. in 1964 and was adopted service-wide on 6 Apr. '67
The colors are as follows; (from CG paint manual dated 1983)
Blue - FS15182, Red - FS 12199, White - FS17875.
Ice-breakers painted red (FS 11105 ) had a white, blue, white stripe using the above numbers for white and blue. The big white ones hull were painted 17875.
Boot top for ice breakers and the big white ones were black (17038).
Black vessels used red boot top (11105).
The stripes are canted at 64 degrees just in case your wondering.
The painting of the smaller boats changes somewhat from this.
Andy, former CG aviator (enlisted), but I still like the boats!
PS International Orange is listed as FS12197.