Ahh here I was thinking that thread had the latest bit I had done…
its not perfection by any means or probably even the best way to do things, might even be the worst.. but seems to work 
#include QMK_KEYBOARD_H
#define MAX_BRIGHTNESS 255
#define MIN_BRIGHTNESS 10
enum custom_keycodes {
MACRO_BRIGHT_UP = SAFE_RANGE,
MACRO_BRIGHT_DOWN
};
static uint8_t ledbright = 20; // Start at 20% brightness
bool increasing = true; // Tracks the direction of the color shift
uint8_t green = 255;
uint8_t blue = 0;
/* Macropad key location to LED Index
* ┌────┬────┬────┬────┐
* row 1 │ 5 │ 2 │ 22 │ 17 │
* ├────┼────┼────┼────┤
* row 2 │ 4 │ 0 │ 20 │ 18 │
* ├────┼────┼────┼────┤
* row 3 │ 7 │ 1 │ 21 │ 16 │
* ├────┼────┼────┼────┤
* row 4 │ 6 │ 3 │ 23 │ 19 │
* ├────┼────┼────┼────┤
* row 5 │ 9 │ 11 │ 15 │ 13 │
* ├────┼────┼────┼────┤
* row 6 │ 8 │ 10 │ 14 │ 12 │
* └────┴────┴────┴────┘
* 24 keys and LEDs total
*/
// Hold down 2 and 6 to flash firmware to macro pad
uint8_t led_colors[24][3] = {
[5] = { 64, 64, 64}, // Shurly this must be grey now.
[2] = { 64, 64, 64}, // Shurly this must be grey now.
[22] = { 64, 64, 64}, // light blue
[17] = { 64, 64, 64}, // DeepDarkBlue
[7] = {255, 0, 0}, // Red
[1] = {255, 165, 0}, // Orange (leaning towards yellow)
[21] = {255, 0, 0}, // Red
[19] = {128, 128, 32}, // Red
[6] = {255, 69, 0}, // Orange
[3] ={234, 255, 0}, // Yellowish with a hint of green
[23] = {255, 69, 0}, // Orange
[12] = { 0, 140, 139}, // Teal
[8] = { 0, 220, 139}, // Teal
[9] = {140, 0, 139}, // Purpleish
[4] = {255, 255, 255}, // White
[0] = {191, 191, 191}, // Dimmer white
[20] = {128, 128, 128}, // can we call it grey yet ?
[18] = { 64, 64, 64} // Shurly this must be grey now.
};
// Default color for all other keys (Dark Blue)
#define DEFAULT_R 0
#define DEFAULT_G 0
#define DEFAULT_B 139
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
[0] = LAYOUT(
KC_NO, KC_NO, KC_NO, KC_NO,
KC_1, KC_2, KC_3, KC_4,
KC_Q, KC_W, KC_E, KC_TAB,
KC_A, KC_S, KC_D, KC_F,
KC_LSFT, KC_NO, KC_NO, TO(1),
KC_LCTL, KC_NO, KC_NO, KC_SPACE
),
[1] = LAYOUT(
KC_NO, KC_NO, KC_NO, KC_NO,
KC_NO, KC_NO, KC_NO, KC_NO,
KC_7, KC_8, KC_9, KC_NO,
KC_4, KC_5, KC_6, KC_NO,
KC_1, KC_2, KC_3, TO(2),
KC_NO, KC_0, KC_NO, KC_NO
),
[2] = LAYOUT(
KC_NO, KC_NO, KC_NO, KC_NO,
KC_F1, KC_F2, KC_F3, KC_F4,
KC_Q, KC_W, KC_E, KC_TAB,
KC_A, KC_S, KC_D, KC_F,
KC_LSFT, KC_NO, KC_NO, TO(3),
KC_LCTL, KC_NO, KC_NO, KC_SPACE
),
[3] = LAYOUT(
KC_NO, KC_NO, KC_NO, KC_NO,
KC_F1, KC_F2, KC_F3, KC_F4,
KC_HOME, KC_UP, KC_PGUP, KC_TAB,
KC_LEFT, KC_DOWN, KC_RIGHT, KC_F,
KC_LSFT, KC_NO, KC_NO, TO(0),
KC_LCTL, KC_NO, KC_NO, KC_SPACE
)
};
void cycle_tab_color(void) {
if (increasing) {
green--;
blue++;
if (green == 0 && blue == 255) {
increasing = false; // Reverse direction
}
} else {
green++;
blue--;
if (green == 255 && blue == 0) {
increasing = true; // Switch back
}
}
led_colors[16][0]=0;
led_colors[16][1]=green;
led_colors[16][2]=blue;
//rgb_matrix_set_color(16, 0, green, blue);// Update RGB lighting
}
bool rgb_matrix_indicators_user(void) {
if (layer_state_is(0))
{
led_colors[13][0]=0;
led_colors[13][1]=255;
led_colors[13][2]=0;
}
if (layer_state_is(1))
{
led_colors[13][0]=255;
led_colors[13][1]=0;
led_colors[13][2]=0;
}
if (layer_state_is(2))
{
led_colors[13][0]=0;
led_colors[13][1]=0;
led_colors[13][2]=255;
}
if (layer_state_is(3))
{
led_colors[13][0]=255;
led_colors[13][1]=0;
led_colors[13][2]=255;
}
for (int i = 0; i < 24; i++) {
uint8_t r = DEFAULT_R, g = DEFAULT_G, b = DEFAULT_B;
if (led_colors[i][0] || led_colors[i][1] || led_colors[i][2]) {
r = (led_colors[i][0] * ledbright) / MAX_BRIGHTNESS;
g = (led_colors[i][1] * ledbright) / MAX_BRIGHTNESS;
b = (led_colors[i][2] * ledbright) / MAX_BRIGHTNESS;
} else {
r = (DEFAULT_R * ledbright) / MAX_BRIGHTNESS;
g = (DEFAULT_G * ledbright) / MAX_BRIGHTNESS;
b = (DEFAULT_B * ledbright) / MAX_BRIGHTNESS;
}
rgb_matrix_set_color(i, r, g, b);
}
cycle_tab_color();
return true;
}
bool process_record_user(uint16_t keycode, keyrecord_t *record) {
if (record->event.pressed) {
if (keycode == MACRO_BRIGHT_DOWN) {
if (ledbright > MIN_BRIGHTNESS) {
ledbright -= 1;
}
} else if (keycode == MACRO_BRIGHT_UP) {
if (ledbright < MAX_BRIGHTNESS) {
ledbright += 1;
}
}
}
return false;
}
so here is where I basically just set the colour of one of the keys to indicate the layer i’m on
bool rgb_matrix_indicators_user(void) {
if (layer_state_is(0))
{
led_colors[13][0]=0;
led_colors[13][1]=255;
led_colors[13][2]=0;
}
if (layer_state_is(1))
{
led_colors[13][0]=255;
led_colors[13][1]=0;
led_colors[13][2]=0;
}
if (layer_state_is(2))
{
led_colors[13][0]=0;
led_colors[13][1]=0;
led_colors[13][2]=255;
}
if (layer_state_is(3))
{
led_colors[13][0]=255;
led_colors[13][1]=0;
led_colors[13][2]=255;
}
for (int i = 0; i < 24; i++) {
uint8_t r = DEFAULT_R, g = DEFAULT_G, b = DEFAULT_B;
if (led_colors[i][0] || led_colors[i][1] || led_colors[i][2]) {
r = (led_colors[i][0] * ledbright) / MAX_BRIGHTNESS;
g = (led_colors[i][1] * ledbright) / MAX_BRIGHTNESS;
b = (led_colors[i][2] * ledbright) / MAX_BRIGHTNESS;
} else {
r = (DEFAULT_R * ledbright) / MAX_BRIGHTNESS;
g = (DEFAULT_G * ledbright) / MAX_BRIGHTNESS;
b = (DEFAULT_B * ledbright) / MAX_BRIGHTNESS;
}
rgb_matrix_set_color(i, r, g, b);
}
cycle_tab_color();
return true;
}
hopefully this helps somewhat.. Colour cycling I was just curious if I could do it and was messing around..
