timeline indicator z-index

We see the indicator hiding behind the events of the timeline. You can see that as well here: http://www-demos.smartclient.com/smartclient-latest/isomorphic/system/reference/SmartClient_Explorer.html#timelineZonesAndIndicators
As shown in our requirements we would like it to be on top of other elements.
Is it possible to achieve this at the moment? If not, please provide a suitable API call.