Ok I changed themes and finally found one that works, most of the dark colored one that I love fail to show the text clearly, I thought the theme is applied system wide so will take care of that, and Miniupdate is part of the default system not my own add-on, anyway, but Pidgin still not showing properly, seems no way to change that. I couldn't show you the screen the bubble text not captured.
Update : When first boot up and the 'keylock' is in locked state(system up to date), the text is unreadable, when I click on it to start update check(white block as background) the text is readable, Pidgin always unreadable in whatever state.
Do you Yahoo ? No I hiccup only ;p