jQuery Mobile Problem on iOS 7

I am developing a mobile web application in JQM 1.3.0 and have created custom color themes using JQM themeroller. If I run the web application on my iPhone 5 (iOS 7.0.4) from Safari, I see the correct colors from my custom color themes. However, if I add the web application to the home screen and run it from the home screen icon, I do not see my custom color themes. Instead I see the default JQM color themes. I have tried to clear the Safari data cache and it did not help. I also tried to reboot the iPhone entirely and it did not help. No matter what I do I cannot seem to make my custom color themes display when the app is run from the home screen. Is this a known issue? Can anything be done about it? This seems like a pretty important bug since most web applications on iPhone are run from the home screen.