Yeah, I see the black line on the keyboard. It has nothing to do with LCARS. Looking at the nuvoClear gtkrc file, I see Change that "#000000" to "#ffffff" and the black line disappears.

For the record, the current LCARS packages (v4.1) all install/uninstall properly on the current OS. Unthemeable graphics (statusbar and tasknav icons, startup graphics, and other things that don't change when you switch themes) are in their own package, "lcars-extras" (which can be removed while keeping the themes themselves). The theme packages aren't functionally much different from other themes, although they were actually built with the official theme tools, rather than with ThemeMaker. (see http://live.gnome.org/Hildon/ThemeHowTo )

That's a ThemeMaker bug. There are supposed to be two different images for each desktop applet - one completely opaque, and one alpha-transparency mask. Instead, ThemeMaker produces two identical images (both with transparency). Take the internet radio, for example: the image "qgn_plat_radio_applet_bg.png" is supposed to be completely opaque (since there's a separate image for it's alpha transparency mask, called "qgn_plat_radio_applet_bg_alpha.png"). ThemeMaker mistakenly outputs the same image for both of those, and when the OS tries to apply the alpha mask to an already transparent image, it bugs out and produces the weird artifacts. If you don't feel like waiting for Konttori to fix ThemeMaker, you could fix the images individually and then repackage the theme.