How to model a Sparkle ball in Xlights

[Tsquared]

Hello,

Has anyone ever modeled a sparkle ball in xlights?  Is anyone able to share any insight on how they might do this or have done in the past?  I messed around witha sphere in xlights but you are required to make each row of lights have the same amount of nodes. 

The sparkle ball is the tadeonal design with the amount of lights per laying below. Total of 50 lights. 

4
9
12
12
9
4

Thank you,