How to creat a Highcharts.CSSObject in JasperReports?

Hi, 

i'm currently testing some stuff with html5 charts in jasper studio and am wondering now, how i could set for example the property title.style.

I know, i could set title.style.fontSize, title.style.color ... But that is annoying. Especially when i want to set Styles for more than 2 or 3 Charts. 

So, is the a way to create the Highcharts.CSSObject