Custom colors for annotations

[dweemx]

It would be useful for a user to be able to set custom colors for a given annotation.

The idea would be to extend the JSON metadata with a new colors key:

{
   'name': 'batch', 
   'values': ['0', '1'], 
   'colors': ['#00FF00', '#800080']
}

Each color would be assigned to its respective annotation value (order matters). In this example this would be:

• 0 => #00FF00
• 1 => #800080

Loom files won't require to have this new colors key in order for SCope to work.

The result would look like: