PVT PLT OF AN SMT STRUCK A RWY LIGHT DURING EXITING THE RWY AFTER LNDG CAUSING DAMAGE TO ONE OF THE PROP BLADES.

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UPON LNDG AT MARATHON ARPT; ANOTHER ACFT ANNOUNCED SHORT FINAL. BEING ANXIOUS TO CLR THE RWY I SAW THAT I WAS NEAR THE FBO PARKING RAMP AND PULLED TO MY R AT A SLOW TAXI SPD IN ORDER TO CLR THE ACTIVE. NO RWY OR TXWY LIGHTS WERE ON AT THE TIME AND VISIBILITY WAS REDUCED DUE TO DUSK. I NOTICED A RWY LIGHT; OR AT LEAST WHAT APPEARED TO BE A LIGHT COLORED OBJECT; JUST TO MY RIGHT; BUT TOO CLOSE TO STOP OR AVOID STRIKING IT WITH THE PROP ON MY R ENG. THERE WAS A SLIGHT BEND IN THE PROP TIP AND A CHIP ABOUT 1/4 INCH BY 1 INCH MISSING AT THE TIP. ON THIS ARPT THERE WAS NO DISTINGUISHABLE DIFFERENCE IN THE RWY AND THE PARKING RAMP PARTICULARLY IN LOW LIGHT CONDITIONS. BOTH ARE CONCRETE OF THE SAME COLOR; AND IT APPEARED THAT THE YELLOW LINES MARKING THE EDGE HAD FADED SOMEWHAT. HAD I COMPLETED MY ROLLOUT AND MADE A 90 DEG TURN INTO THE FBO I PROBABLY WOULD HAVE NOTICED THE LIGHT. HAD THE LIGHTS BEEN TURNED ON EARLIER I DEFINITELY WOULD HAVE NOTICED IT. THE BEND AT THE TIP WAS EASILY STRAIGHTENED BY USING CLAMPS AND HARDWOOD BOARDS; AND THE CHIP WAS SMOOTHED WITH A FILE. GND RUN-UP INDICATED NO VIBRATION AND A COMPARISON WITH THE L ENG SHOWED NO DIFFERENCE AT ALL. FLT TEST GAVE SIMILAR RESULTS AND NO DIFFERENCES COULD BE ASCERTAINED IN PERFORMANCE INFLT. I SHOULD NOT HAVE ALLOWED A FOLLOWING ACFT TO HASTEN MY EXIT FROM THE RWY EXCEPT IN THE EVENT OF AN EMER MORE APPARENT THAN EXISTED. I SHOULD BE MORE VIGILANT UNDER LOW LIGHT CONDITIONS AND PERHAPS USE MY LNDG LIGHTS WELL IN ADVANCE OF ARPT LIGHTS BEING TURNED ON. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT THE REPAIR TO THE PROP WAS ACCOMPLISHED BY AN FBO MECH AND APPROPRIATELY WRITTEN UP IN THE ACFT LOG (BEECH 55 MODEL ACFT).