The function of leucoplasts:

Leucoplasts are the third type of plastids. They are colorless and store starch, proteins, and lipids. They are present in the cells of those parts where food is stored.

The function of chromoplasts:

The second type of plastids in plant cells are chromoplasts. They contain pigments associated with bright colors and are present in the cells of flower petals and fruits. Their function is to give colors to these parts and thus help in the pollination and dispersal of fruit.