A quick search came up with the thread below for the Rom you mentioned. A search did not come up with anything specific to your question. However in the OP of the Rom I linked it mentions making the choice of BG ( Background ) Transparency in AROMA. As you did not mention your specific Carrier, make sure that the Rom I linked is the same one that you mentioned.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer? | Terms of Service