Final answer:
The smaller size stars worn on miniature medals are silver, representing different levels of distinction or additional awards, and are typically used on formal occasions.
Step-by-step explanation:
The smaller size stars that are worn on miniature medals are silver. These miniature medals are a scaled-down version of full-size medals and are often worn on formal occasions when it would be inappropriate to wear the large service medals. The stars represent various levels of distinction or additional awards, and traditionally, silver stars are used on miniature versions to indicate such honors. While gold is a metal often associated with medals, in the context of miniature medals, silver is used for the stars.