Default How can I change the background of my taskbar icons ON THE LEFT?

I'm trying to change the background of my app icons in the status bar. I can use gravity box to change the bar itself, but the background of the icons themselves stays black. I have an app named "Trust". Can't see what the droid is holding in the icon...
Gravity box let's me change the background of the clock and signal icons, but leaves my icons alone...

I am looking for a non gravity box solution, hence the post is here.

Thanks in advance!

Oh yeah, using Stock 4.1.1 in a Huawei Valiant. MetroPCS

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