Acrobat version: Pro DC for Mac OS (2015 release)
OS: Mac OX X 10.11.1 (El Capitan)
I have set my drawing tools to use a cyan border and a 50% opaque cyan fill in the properties windows. However, when I draw a commenting shape in my document, they come out a deep burgundy! Yet, if I select the shape and check the properties, the correct color is indicated.
Here is a link to a screenshot: https://dl.dropboxusercontent.com/u/76130393/Screen%20Shot%202015-11-30%20at%2023.27.13.jp g