Metallics like gold and silver are a popular choice for golden year celebrations. Personalize the celebrations by choosing a theme for the party that relates to the honoree.
Many celebrations keep a traditional tone by accenting blacks and whites with metallic details. One may also choose to highlight the honoree's alma mater and use their high school or university colors. If that is not relevant, consider an era from which the person has fond memories. For example, a Jazz Age celebration lends itself to black and gold. When planning the celebration, also consider the honoree's personal interests and hobbies. A tea party lends itself to roses and lavenders, while an outdoorsman's party pulls in the colors of nature. Any colors chosen should complement one another.