Hi, 

Colourless plastids are also known as leukoplasts. These leukoplasts are found in storage organs. these lack grana and photosynthetic pigments as well. these are again divided into three types- Amyloplast, aleuronoplast and Elaioplast. 

Amyloplast are those leukoplast that store starch granules and are found in ones such as potato tuber, rice , wheat etc 

Alenuroplast are those leukocytes that store proteins and are found in plants like wheat grains 

Elaioplast are those leukocytes that store lipids and are found in endosperm of castor seeds.

hope it helped 

Good Luck, :)