ACR X NON ADHERENCE TO ATC INSTRUCTION RWY INCURSION BEYOND HOLD LINE HAD LTSS FROM ACR Y TKOF.

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ACR X TOLD: 'TAXI VIA CHARLIE; HOLD SHORT OF RWY 23.' WHILE APCHING TXWY 'G;' AND WHILE MAKING THE TURN TO FOLLOW TXWY 'C;' I OBSERVED HOLD SHORT LINES BUT HAD THE IMPRESSION THAT THEY APPLIED TO RWY 16-34. ALSO; THE OLD HOLD SHORT LINES THAT WERE CLOSER TO RWY 23 HAD BEEN PAINTED OVER WITH BLACK PAINT WHICH REFLECTED THE SUNLIGHT WHICH WE WERE TAXIING STRAIGHT INTO. AS A ACR Y DC-9 WAS TAKING OFF ON RWY 5; GND CTL YELLED: 'HOLD SHORT OF RWY 23.' AFTER WE ACKNOWLEDGED THAT; GND CTL POINTED OUT THAT WE HAD PASSED THE HOLD SHORT LINE. I RESPONDED BY SAYING THAT THE SUN'S REFLECTION FROM OLD HOLD SHORT LINES MADE THEM APPEAR CURRENT. AFTER THAT WE RECEIVED CLRNC TO GND ACROSS RWY 23 TO TAXI ALL THE WAY TO RWY 34. AS WE APCHED THE HOLD LINES FOR RWY 34; I LOOKED DOWN AT MY ARPT CHART FOR THE TWR FREQ AND WHEN I LOOKED UP; THE CAPT HAD PASSED THOSE HOLD LINES AS WELL; ALTHOUGH THIS TIME IT WAS NOT POINTED OUT; BY EITHER TWR OR GND CTL; PERHAPS BECAUSE WE WERE ALMOST IMMEDIATELY CLRED FOR TKOF. TO PREVENT THIS FROM HAPPENING AGAIN; I WILL TRY TO BE MORE ALERT TO BETTER ASSIST THE CAPT DURING TAXI MANEUVERING. ALSO; I THINK THAT WHEN HOLD LINES ARE REMOVED OR DELETED; THE GENERAL AREA SHOULD BE PAINTED OVER; INSTEAD OF JUST THE YELLOW MARKS. THAT COULD HELP PREVENT SOMEONE ELSE FROM PERCEIVING PAINTED OVER HOLD LINES AS THE 'REAL THING;' ESPECIALLY WHILE TAXIING INTO THE SUN.