Worklight Hybrid application with a colored background displays a white line at the bottom in IOS 7.1. The same problem of https://www.ibm.com/developerworks/community/blogs/worklightsmobileplayground/entry/ios_7_1_is_around_the_corner?lang=en
I'm using Worklight version 6.1.0.00-20131126-0630 , but it did not fix the problem reported the above.