I want to buy a Dev Kit

What is the meaning of different colors of the light on the computing unit?

When not charging:
Powering on: green light increasing regularly;
Powered on: light in pink; power less than or equal to 33%;
Power between 33%-66%: two green lights
Power more than 66%: three green lights
Standby: light in blue
Shutting down: green light decreasing regularly

When charging:
Power less than or equal to 33%: single green light flashing.
Power between 33%-66%: the second light flashes green
Power between 66%-99%: the third light flashes in green
Sleep after fully charged: three blue lights @周梁