Good day,
I have a total experience on elearning systems and development for over 15 years. I have worked on Adobe Captivate for 10 years, that is since version 2 in 2006.
I can do the theme for you as requested. First I will create 3 concepts, then based on the results and discussions with you agreeing with your client about the concept, I'd work on the theme, the resulting theme will be a captivate theme that can be used to insert or modify the design of slides.
Another thing which you have not asked for, I will include also with my bid a suitable skin to match the theme.
The work should finish in less time than proposed, but thought to keep some more time for better communication.
Please initiate a discussion with me to discuss further.
I am ready to work on this within a couple of days.
Thanks and best regards,
Solutions SP
Submission of 11-3-2015