There are some other details that can be seen on the packaging. The mysterious colored circles on most of the food packaging are something people raise their questions about. These colors circles are regarded as process control patches.The colors blocks are mentioned in every packaging. However, the way they are shown on the packaging may vary. For example, in the boxed packaging, the color blocks are indicated as squared color blocks.Sometimes, the manufacturer does not add the color circles on the packaging since adding the color circles or not adding it is a personal choice of the brand or manufacturer.