Hello Keerthanaa,

Thank you for your post. I have been looking into it and I can suggest you see this forum post:

http://es.infragistics.com/community/forums/p/2463/15367.aspx

where it is explained what you need to do. Also here is a link to our online documentation:

http://help.infragistics.com/NetAdvantage/WPF/2012.1/CLR4.0/?page=WPF_Creating_a_ThemePack.html

where it is described step by step how to create your own ThemePack. Please let me know if this helps you or you need further assistance on this matter.

Looking forward for your reply.