Feature Request: Add texture to colored records on timeline view

We are doing software for a dude ranch and it uses the timeline view with colors to show the status of reservation records. It would be really nice if we could add a “texture” to these records to identify them based on a second characteristic. For example, all records that are “deposit paid” are blue, but that means all records are blue for a long time. It would be nice if I could add stripes on top of the blue to see all the records that are part of the group, for instance.