Applying styling to to BarChartGroupData

Is your feature request relasted to a problem? Please describe. I'm showing data based on months (i.e x axis is months, y axis is value) - I've got three rods per month, and I have various logic to determine the color. I'm looking at options on how to highlight a specific month (e.g the current month). This is only for aesthetic purposes.

Describe the solution you'd like Since my implementation is using colors, my only option appears to be the rod width to highlight rods. It would be great if there were additional options available and a couple of options I could think of :

• Applying a border to BarChartGroupData (e.g dotted, dashed, solid)
• Applying an elevation to the rods to pop it out

Describe alternatives you've considered Alternatives I've tried is to alter the color codes, adjusting the rod sizes (rod width)