Adafruit Flora V2 use onboard and external NeoPixels
The #define is just letting you use a nice name for the numeric value of the pin.  If you want to use two different pins, you use two different names.

So you might define them at the beginning something like:

#define BOARDLED 8
#define STRIPLED 6


Then you create a NeoPixel object that uses that pin.  In your case, you'll do this twice.

Adafruit_NeoPixel flora_led = Adafruit_NeoPixel(60, BOARDLED, NEO_GRB + NEO_KHZ800);
Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, STRIPLED, NEO_GRB + NEO_KHZ800);


And then you call the one you want to set/modify/show/etc.

strip.show();
flora_led.show();