would it be acceptable if secondary events in a topic had a different appearence such as outline, via eventBorderColor and eventBackgroundColor
You simulate layering by combining:
| Property | Primary (confirmed) | Tentative / secondary |
|---|---|---|
| eventBackgroundColor | solid | different / light |
| eventBorderColor | same as fill | strong contrast |
| border style | solid | dashed |
| opacity | 1 | 1 |
This creates a visual hierarchy without needing actual stacking.