Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
There is no known SVG module that can be used with Acquia Cohesion.
Yes, the component link field supports both internal and external URLs.
No, the entity browser does not work for component defaults as the entities are content, not config.
Opacity is set using a decimal where 0 is transparent, 0.5 is 50% and 1 is solid.