The boot as it enters the distributor through the hole had AUTOLITE cast into the surface
As for color of the boot I believe that it indicated the length of the lead and in turn the application
Looked at my pictures and found what may be an interesting detail. Like other details it seems that it might depend on when the car was built.
When was your car completed at Ford/Dearborn?
Might help to incorporate your cars info into your signature or you're going to be answering that question and others engine size/type, trans, options, ..... allot here