Hello Karthik,
this would not be the standard theme used in ITSMobile.
This note 1656975 - How to set the theme for SAPGUI for HTML?
is for the the SAPGUI for HTML or WEBGUI service. You are essentially switching from sap_corbu to sap_tradeshow.
What are the other 'GUI Configuration' parameters that you has set in your ITSMobile service?
Regards,
Oisin