i did google maps by myself. just download myfile / ifile from cydia and copy the images from the apple maps app to a new folder in the themes folder named: com.google.Maps and paste them. RENAME the images: to AppIcon@2x.png and AppIcon-120.png, otherwise it wont work. reapply the theme and respring. voila
The install process is quite simple, just download this beautiful theme and open in "Ifile" then click the file and press on "unarchiver." Once that's complete copy the folder that's created(zanilla.theme) and paste it into "themes.vbaril" which is in the "stash" folder under "var" in the root of your device. Enjoy!