Static colour on WS2812 LED's as well as animation on another pin

I’m doing a back lighting thing for a project. I want some LED’s flickering, which I have working fine, however.

I’m wondering, since amber LED strip at 5v is apparently a unicorn, whether I can use another pin and output just a static colour on that second strip?

Below is what I’m currently using, and given the LED pin can be defined, I’m assuming I could add something to this as a second pin.

Basically, I’m a coding moron and have no idea what I’m doing here. Is it possible?

#include <FastLED.h>

#define LED_PIN     6
#define NUM_LEDS    57
#define BRIGHTNESS  255
#define LED_TYPE    WS2812
#define COLOR_ORDER GRB
CRGB leds[NUM_LEDS];

#define UPDATES_PER_SECOND 100


CRGBPalette16 currentPalette;
TBlendType    currentBlending;

extern CRGBPalette16 LavaColors;
extern const TProgmemPalette16 LavaColors_p PROGMEM;


void setup() {
    delay( 3000 ); // power-up safety delay
    FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.setBrightness(  BRIGHTNESS );
    
    currentPalette = LavaColors_p;
    currentBlending = LINEARBLEND;
}


void loop()
{
    
    static uint8_t startIndex = 0;
    startIndex = startIndex + 1; /* motion speed */
    
    FillLEDsFromPaletteColors( startIndex);
    
    FastLED.show();
    FastLED.delay(1000 / UPDATES_PER_SECOND);
}

void FillLEDsFromPaletteColors( uint8_t colorIndex)
{
    uint8_t brightness = 255;
    
    for( int i = 0; i < NUM_LEDS; i++) {
        leds[i] = ColorFromPalette( currentPalette, colorIndex, brightness, currentBlending);
        colorIndex += 3;
    }
}


// There are several different palettes of colors demonstrated here.
//
// FastLED provides several 'preset' palettes: RainbowColors_p, RainbowStripeColors_p,
// OceanColors_p, CloudColors_p, LavaColors_p, ForestColors_p, and PartyColors_p.