Hey there. I don't work for Lockitron, but I can share what I know. It's not 100%.
Bridge LED Behaviour:
Green (blinking): Powering on, connecting to network.
Blue (on): Bluetooth connection open with Lockitron
Bolt LED Behaviour:
Green (on for 5s): Power on
Blue (on): Connected to Bridge or App via Bluetooth
Blue (blinking): Updating firmware