Feature Request

New Feature

Description

Many NLE programs allow users to color code individual clips and/or tracks in the timeline user interface. This color information is encoded in AAF, and XML files. It would be great if OTIO had a schema property to carry this in a portable way.

Context

Since this PR OpenTimelineIO/raven#14 Raven has minimal support for this as app-specific metadata. That feature was added to help instigate discussion about this schema change.

OTIO already carries per-marker color coding, as an enumerated string value (e.g. "RED", "CYAN", etc.) which has been awkward at times. Perhaps we could revisit that decision and see if maybe storing an RGB triple, or hexadecimal value like "#FF0" might be better.