This feature was working with earlier versions of BIDS (SSIS - Business Intelligence Developer Studio).
The color is always black
It think it works until BIDS or SSDT VS 2010 or earlier and it stopped working from SSDT integrated with VS 2012 regarding my work experience.
Setting colors other than the black color to annotations text is very important for documentations :
highlighting the important comments we need to take care in development, testing, ... for any kind of documentation of business rules etc....
I have tested this feature with all the SSDT (Visual Studio) themes (black, blue, light), not working any way.
It is very frustrating that this feature is not working any more even with the last version of SSDT shipped with SQL Server 2016 (SSDT integrated in VS 2015).
I think this is a must for an ETL tool that is fully used and spread among the other Microsoft BI tools.
Some threads were opened in forum about this issue but there is no fix !
Regards