Change folders icon color in bookmark manager

[Jakov93]

Hi,
Please how to change folders icon color in bookmark manager, I want to restore its original color (yellow, yellow orange), as the color now is make confusing with some bookmarks, so changing color will be easily distinguishable.

Thanks

[S8F8ry]

Unfortunately, there is currently no way to modify this icon directly.

[Jakov93]

Unfortunately, there is currently no way to modify this icon directly.

Ok, if no directly, indirectly? 
Editing xml file or config files?
Thanks again