[Solved] Noob questions about i3?

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http://crunchbanglinux.org – Hi, I am new to i3, and I begin to love it more than Openbox. So I have removed Openbox altogether. But I don't know how I can do the following under i3 environment?1) How do I get a warning when my battery is dying? Is there a way to make a pop up window to warn me?2) How can I change the GTK theme when I am using i3? I have tried creating settings.ininano ~/.config/gtk-3.0/settings.ini And put this [Settings] gtk-theme-name = Shiki-sStatler-Dark gtk-icon-theme-name = elementaryXubuntu-dark gtk-fallback-icon-theme = gnome # next option is applicable only if selected $ gtk-application-pre (HowTos)