FastLED 3.1 blend serial print

/** FAST LED Blend tester */


#include <FastLED.h>

#define LED_PIN     6
#define COLOR_ORDER GRB
#define CHIPSET     WS2811
#define NUM_LEDS    100
#define HALF_LEDS  50
#define BRIGHTNESS  255
#define FRAMES_PER_SECOND 100


CRGB leds[NUM_LEDS];
CRGB ledsPrev[NUM_LEDS];
CRGB ledsNext[NUM_LEDS];
CRGBPalette16 gPal;
CRGB currentColor;

bool tweenBool = false;


void setup() {

  Serial.begin(57600);
  Serial.println("resetting");
 // sanity delay
  FastLED.addLeds<CHIPSET, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
  FastLED.setBrightness( BRIGHTNESS );

  // This first palette is the basic 'black body radiation' colors,
  // which run from black to red to bright yellow to white.

  gPal = RainbowColors_p;
  currentColor = ColorFromPalette( gPal, random8());
 // FastLED.setDither( 0 );
 tweenBool = true;

  delay(3000);
   Serial.println("Blend Testing FASTLED 3.01");
   Serial.println();
}


void loop()
{
  if (tweenBool) {
   fill_solid(&(ledsNext[0]),50, CRGB( 1,5, 0));
   fill_solid(&(ledsPrev[0]),50, CRGB( 3, 60, 1));
   fill_solid(&(leds[0]),50, CRGB( 0, 0, 0));

   Serial.print("Blend From");
   Serial.print(" R:");
   Serial.print(ledsPrev[20].r);
   Serial.print(" G:");
   Serial.print(ledsPrev[20].g);
   Serial.print(" B:");
   Serial.println(ledsPrev[20].b);
    Serial.print("Blend To");
   Serial.print(" R:");
   Serial.print(ledsNext[20].r);
   Serial.print(" G:");
   Serial.print(ledsNext[20].g);
   Serial.print(" B:");
   Serial.println(ledsNext[20].b);
   Serial.println();

  for (int i = 0; i <= 255; i++) {
    tween2Next(i);

  }
   Serial.println();
   Serial.print("Blend Next");
   Serial.print(" R:");
   Serial.print(ledsNext[20].r);
   Serial.print(" G:");
   Serial.print(ledsNext[20].g);
   Serial.print(" B:");
   Serial.println(ledsNext[20].b);
   Serial.println();
  tweenBool = false;
  }
}


void tween2Next( int frameC) {
  for (int i = 0; i< HALF_LEDS; i++)
 {
   leds[i] = blend(ledsPrev[i],ledsNext[i],frameC);
 }

 printLED(20,frameC);

}

void printLED(int ledIndex, int frameC) {

   Serial.print("Blend %");
   Serial.print(frameC);
   Serial.print(" - R:");
   Serial.print(leds[ledIndex].r);
   Serial.print(" G:");
   Serial.print(leds[ledIndex].g);
   Serial.print(" B:");
   Serial.println(leds[ledIndex].b);

}