 
 #define VEL_DAMPING .9 // number between 0 and 1;
 #define MAX_VEL 1.5
-#define FALL_SPEED 30
+#define FALL_SPEED 100
 
 struct CRGB leds[TRUE_LED_COUNT];
 float aleds_vel[NUM_LEDS];

    bnext_leds_brightness[i] = next_for_idx(i, bleds_brightness, bleds_vel);
  }
  if (random(10) == 0){
    if (atoggle) anext_leds_brightness[random(NUM_LEDS)] = 30.0;
    else anext_leds_brightness[random(NUM_LEDS)] = - 30.0;
    atoggle = !atoggle;
  }
  if (random(10) == 0){
    if (btoggle) bnext_leds_brightness[random(NUM_LEDS)] = 30.0;
    else bnext_leds_brightness[random(NUM_LEDS)] = - 30.0;
    btoggle = !btoggle;
  }
  for (int k = 0; k<NUM_LEDS; k++){


CRGB dualbright2CRGB(float abright, float bbright){
  float r=0, b=0, g=0;
  if (abright > 0) {
    r += abright / 2;
    b += abright;
  } else if (abright <= 0) {
    b -= 2 * abright / 3;
    g -= abright / 5;
  }
  if (bbright > 0) {
    r += bbright;
    b += bbright/3;
  } else if (bbright <= 0) {
    b -= abright / 2;
    g -= abright / 5;
  }
  return CRGB(r/2, g/2, 2 * b/3);
}
