Some of the blue tapes are superior to the beige varieties, some are the same. For that particular masking job I didn't need anything special, just had some blue lying around. 3M has several varieties when you start needing finer edges, as when painting. One is called something like "Edge Lock." It is blue with yellow printing on it.
But when you need really good edges, for example between different colors on the outside of the hull you need automotive-quality tape. The best I know of is 3M 218 Fine Line Tape which you can order from CLC or many places online. Or if you have an automotive paint store, e.g., Ditzler, in your town you can purchase locally. We used to have one here, but they went out of business so now I have to order mine. This tape is some sort of plastic and has the ability to follow curves, up to a point. You can buy it in several widths--the narrower tapes can go around tighter curves. Anything with a radius of less than several inches, though, and you will have to cut small pieces to follow around it. Some folks (e.g., Jeff Hatch) are much better at this than I am. You might want to contact him for advice. His boat is beautiful work of art. Check it out at
https://www.flickr.com/photos/35243545@N02/ .