dictionary inside an array and remove all duplicate keys and values

Question

hello all i have a problem with a problem in python. I have a dictionary inside an array and I want to remove all duplicate keys and values ​​from the array. My code is:

color=[{"key":"orange","value":1},{"key":"orange","value":1},{"key":"violet","value":2}]
new_color={}
for i in color:
    if i["key"] not in i:
        new_color.setdefault("key",[]).append(i["key"])
        new_color.setdefault("value",[]).append(i["value"])
print(new_color)

for example i want the output to be: color=[{"key":"orange","value":1},{"key":"violet","value":2}] How can i do?