In order to apply a change to an individual item of a recurrence, the item must be made an exception. This is automatically done when changing any of the item's properties. However, the system cannot detect changes within the Style associated with an item. That's why changing the Brush property of the style is not detected and the change is applied across the whole recurrence.

There are several ways to work around this. You can clone the item's style, change the brush in the clone, then assign the new style to the Item.Style property. This will force the item to become exception and the style will be applied only to this item. You can also change any of the item's properties than set it back to its previous value in order to force the item to become exception. Afterwards, modifying the style of the item will not affect the other items in the recurrence.

Meppy