Relit A0 is a led strip of 12 RGB LEDs (Like NeoPixels) that work well with Recore A7.
Compiling Klipper with support for Neopixels
[neopixel relit] pin: PB3 chain_count: 12
set_led led=relit RED=1 GREEN=1 BLUE=1 TRANSMIT=1
Running the light at full power with all LEDs on can cause too much power to be drawn from the 5 V step down converter on Recore. Depending on the current consumption of the USB and CPU, this might be too much. The total current consumption of one Relit is 192 mA when all LEDs are fully on.