CAPT OF LTT TAXIES WHILE CHKLIST IS BEING COMPLETED. HE TURNS ONTO WHAT HE BELIEVES IS THE RWY AND AT 80 KTS TURNS THE ACFT OVER TO THE FO. NOTING THE DARKER THAN NORMAL APPEARANCE THE FO REALIZES THEY ARE TAKING OFF ON A PARALLEL TXWY.

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AS WE TURNED ON TXWY A WE WERE CLRED FOR TKOF. THE CAPT ACCELERATED HIS TAXI TO THE RWY (RWY 36R). WHILE HE WAS DRIVING; I FINISHED THE TAXI CHKLIST AND STARTED THE BEFORE TKOF CHKLIST. MY EYES AND ATTN WERE INSIDE THE AIRPLANE. BEFORE I WAS DONE WITH THE CHKLIST WE WERE BEGINNING TO ROLL DOWN THE RWY -- I THOUGHT. AS THE CAPT BROUGHT UP THE PWR TO TKOF PWR; I WAS STILL INSIDE THE COCKPIT; WATCHING THE ENG GAUGES AND AIRSPD. AT 80 KTS THE ACFT WAS HANDED OVER TO ME AS COMPANY PROCS DICTATE (IT WAS MY LEG TO FLY). AS WE ROLLED OUT I NOTICED THAT THE RWY WAS DARKER THAN NORMAL. AT V1 I REALIZED WE WERE ON THE PARALLEL TXWY TO RWY 36R. I SAW NO XING TFC AND IMMEDIATELY ROTATED AND STARTED THE CLB. NO ONE APPARENTLY NOTICED THAT WE TOOK OFF OF THE TXWY. I WASN'T 100% SURE FOR SOME MINS AFTER WHEN I HAD TIME TO LOOK BACK AND REPLAY THE TKOF. THE CAPT NEVER NOTICED. THE VISIBILITY WAS AMAZINGLY CLR. THERE SEEMED TO BE MORE LIGHTS THAN NORMAL. WE DIDN'T USE THE STANDARD TAXI TO RWY 36R INTXN A. NORMALLY WE USE THE INNER TXWY (TRANSITION TO TXWY F AT G10). WE TAXIED ON TXWY G TO TXWY A. I ASSUME THE CAPT WAS USED TO MAKING THE SHORT R TURN TO THE RWY; ALONG WITH THE WHITE LIGHTS APPEARING BRIGHTER THE CAPT ASSUMED HE WAS ON THE RWY. I SHOULD HAVE MADE THE CAPT SLOW DOWN ENOUGH SO I COULD REGAIN MY SITUATIONAL AWARENESS. I SHOULD HAVE FORCED MY EYES OUT OF THE COCKPIT DURING THE TAXI AND ESPECIALLY AS WE TOOK THE 'RWY.' I THINK THE BEFORE TKOF CHKLIST SHOULD BE COMPLETED BEFORE WE TAKE THE RWY. THAT WAY; BOTH CREW MEMBERS CAN BE LOOKING OUTSIDE THE ACFT WHERE ALL OF THE DANGER LURKS ANYWAY. I AM STILL STUNNED BY THE OCCURRENCE; ESPECIALLY WITH SUCH GOOD VISIBILITY. I AM VERY THANKFUL THAT THERE WAS NO XING TFC DOWNFIELD.