Here is the parametrized and optimized version with just plain assignments thanks to Karol's hint on POSR/PORR bits in PCNTR3 registers:
#define _CHK_PIN_0(p,b) ((R_IOPORT##p->PCNTR1 & (1<<((b)+16)))==0)
#define _CHK_PIN_1(p,b) ((R_IOPORT##p->PCNTR1 & (1<<((b)+16)))!=0)
#define _CLR_PIN(p,b) {R_IOPORT##p->PCNTR3 = (1<<((b)+16));}
#define _SET_PIN(p,b) {R_IOPORT##p->PCNTR3 = (1<<((b) ));}
#define _GreenLed_IsOn() _CHK_PIN_0(6,0)// (P6.0==0)
#define _GreenLed_On() _CLR_PIN(6,0) // P6.0 = 0;
#define _GreenLed_Off() _SET_PIN(6,0) // P6.0 = 1;
#define _RedLed_IsOn() _CHK_PIN_0(6,1)// (P6.1==0)
#define _RedLed_On() _CLR_PIN(6,1) // P6.1 = 0;
#define _RedLed_Off() _SET_PIN(6,1) // P6.1 = 1;
#define _OrangeLed_IsOn() _CHK_PIN_0(6,2)// (P6.2==0)
#define _OrangeLed_On() _CLR_PIN(6,2) // P6.2 = 0;
#define _OrangeLed_Off() _SET_PIN(6,2) // P6.2 = 1;