Haha, yeah sorry - that's part of why I threw in the TLDR at the bottom there. Here are some photos of colonial tunicates with similar body structure (and some with - from what I can tell - similar coloration) to help decide if it is a colonial tunicate:
(The two above images are from here:
https://www.mdpi.com/1424-2818/14/11/977 )
And the link below has a bunch more pics (some are different colonial tunicates like above, some are solitary tunicates):
Ascideacea
www.floridamuseum.ufl.edu