Back in the day, Light Flow was an integral part of the Android enthusiast toolkit. Nexus phones came with snazzy multicolored LEDs for notifications, but customization options were limited. Light Flow filled that gap with per-app and per-notification type tweaks. Sadly for those that might still be using it, Google's API targeting requirements will be limiting colored LED support going forward. Per-contact and call/SMS/MMS distinguishing notification customization will also have to be abandoned as a result of other developer policy changes.

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