Multistrip test

#include "FastLED.h"
#define NUM_LEDS_PER_STRIP 9
CRGB leftWallLeds[NUM_LEDS_PER_STRIP];
CRGB rightWallLeds[NUM_LEDS_PER_STRIP];
CRGB bottomLeds[NUM_LEDS_PER_STRIP];
CRGB tempLED;
byte hue = 0;
byte counter=0;
int spark = 0;
int sparkCheck = 0;

void setup() {
  // put your setup code here, to run once:
   FastLED.addLeds<NEOPIXEL, D3>(leftWallLeds, NUM_LEDS_PER_STRIP);
  FastLED.addLeds<NEOPIXEL, D5>(rightWallLeds, NUM_LEDS_PER_STRIP);
  FastLED.addLeds<NEOPIXEL, D7>(bottomLeds, NUM_LEDS_PER_STRIP);

}

void loop() {
  // put your main code here, to run repeatedly:
    hue++;
  delay(random(20,40));
  int i = random8(8);
    leftWallLeds[i] = CHSV(random(1,15), 255, random(30,160));
    rightWallLeds[i] = CHSV(random(15,25), 255, random(30,160));
    bottomLeds[i] = CHSV(random(250,8), 255, random(30,160));
     FastLED.show();

    delay(random(50,75));

     for(int x=0; x<NUM_LEDS_PER_STRIP; x++){
    leftWallLeds[x].fadeToBlackBy(.5);
     }
     for(int x=0; x<NUM_LEDS_PER_STRIP; x++){
    rightWallLeds[x].fadeToBlackBy(.5);
     }
     for(int x=0; x<NUM_LEDS_PER_STRIP; x++){
    bottomLeds[x].fadeToBlackBy(.5);
     }

}