adds a line around the title and adds a glow around that line:
Sub AddGlowToTitle()
Dim myChart As Chart
Set myChart = ActiveChart
myChart.ChartTitle.Format.Line.ForeColor.RGB = RGB(255, 255, 255)
myChart.ChartTitle.Format.Line.DashStyle = msoLineSolid
myChart.ChartTitle.Format.Glow.Color.ObjectThemeColor = msoThemeColorAccent6
myChart.ChartTitle.Format.Glow.Radius = 8
End Sub