technicolor spaghetti

[nbokulich]

Improvement Description
spaghetti color is defined by the group value at the initial state.

ideally, spaghetti color should change dynamically. E.g., some metadata categories (like antibiotic use or other exposures) may change longitudinally for a subject. It would be nice to capture those.

Comments
That probably cannot be done easily... but it would be pretty cool if it could.