LEDs

The Kimera's FW has 8 modes of backlight:
0: Off.
1-3: On, 3 levels of brightness, bigger is brighter.
4-6: Breathing led, 3 levels of speed, bigger is faster.
7-8: Typing led, decreasing brightness when typing on mode 7 and increasing brightness when typing on mode 8.

Fn to control backlight:
- BACKLIGHT_ON: Turn on backlight, resume to the latest non-off mode (1-8).
- BACKLIGHT_OFF: Turn off backlight, equivalent to set mode to off (0).
- BACKLIGHT_TOGGLE: Toggle backlight.
- BACKLIGHT_INCREASE: Set mode +1, only works with non-off modes (1-8).
- BACKLIGHT_DECREASE: Set mode -1, only works with non-off modes (1-8).
- BACKLIGHT_STEP: Step through all the modes, e.g. 0->1->2-> ... ->8->0.

Ledmap:
TKG has an ability to re-map the function of LEDs. For Golbat, the LED on row2-col1 is routed to LED2 (usually be used as Caps Lock) and all the other LEDs are routed to LED4 (usually be used as backlight). LED1 and LED3 are not used.
The options on the LED section of TKG mean:
- None: No binding.
- Default layer: Bind to state of default layer. Turn on when default layer is on.
- Layer: Bind to state of layer. Turn on when layer is on.
- Indicator: Bind to state of Num/Caps/Scroll Lock. Indicate the traditional lock states.
- Reverse: Reverse the above binding states. E.g. if LED is set to binding to "Caps Lock" and "Reverse" is enabled, then the LED will be turned on when "Caps Lock" is OFF (lower case) and be turned off when "Caps Lock" if ON (upper case). This is "reversed" against normal state.
- Backlight: Override the binding states when backlight is ON. E.g. if LED is set to binding to "Caps Lock" and "Backlight" is enabled, then LED will indicate the "Caps Lock" state when backlight is OFF, and when backlight is ON it will works as same behaviour as other backlight LEDs.