De-shielding that board shows us some of the fun that's running the light show up top:

Texas Instruments TLC5971 LED driver

Cypress CY8C4245LQI-483 Programmable System-on-Chip, likely tasked with touch control

ON Semiconductor FPF1039 slew-rate-controlled load switch

Texas Instruments TPS62135 4 A step-down converter

The flip side of the board houses the LEDs and the diffuser that gives the indicator its cloudy look.

The top side of the board (second photo) sports a neatly organized pattern of tiny divots—possibly a capacitive grid, like on the Google Home, for registering your taps and touches on the surface above.