Simple widget to display network usage history (receive and transmit) on your device home screen, with a possibility to configure the colors used.
Please also check out CPU Widget for Android:
http://play.google.com/store/apps/details?id=com.rtsw.androidcpuwidget
#1 Transparency for color settings
#2 Lockscreen/keyguard support, plus resizing
#3 User-defined border