I'm not sure I've understood your request correctly, but if the issue is that the divider isn't showing up, I think it's just that the colour you've chosen is too light. You might want to try a darker value than #EEEEEE, which is the one you have currently. Here's a version with #CCCCCC, for example:
If I have the wrong idea, feel free to clarify and I'll try to look into it further for you.