Mimic Charts Tooltip style outside of chart

[mosquito]

Our client loves the charts that we have added to their application, but they are being picky about styling consistency across other parts of the app that have tooltips on mouseover that don't exactly match the look of the tooltips in the charts. There are options out there for changing the styling of the default chart tooltip, but what our client would rather have is an exact match to the default in the other parts of our application. Is there a relatively simple way to do access that default styling so that we can apply it to our own tooltips?