=IF(Created@cell < DATE(2021,6,30),"Gray",IF(OR(AND([Priority]@cell = "P1",[Days Since Creation]@cell <= 30),AND([Priority]@cell = "P2",[Days Since Creation]@cell <=45), AND([Priority]@cell="P3",[Days Since Creation]@cell<=60), AND([Priority]@cell="P4",[Days Since Creation]@cell<=120),AND([Priority]@cell="P5",[Days Since Creation]@cell<=180)),"Green",IF(OR(AND([Priority]@cell="P1",[Days Since Creation]@cell>30,[Days Since Creation]@cell<=45),AND([Priority]@cell="P2",[Days Since Creation]@cell>45, [Days Since Creation]@cell<=60), AND([Priority]@cell="P3",[Days Since Creation]@cell>60, [Days Since Creation]@cell<=90), AND([Priority]@cell="P4",[Days Since Creation]@cell>120, [Days Since Creation]@cell<=150), AND([Priority]@cell="P5",[Days Since Creation]@cell>180, [Days Since Creation]@cell<210)), "Yellow","Red")))