Four egg-shaped aerial objects were observed in the sky on the evening of July 31, 1965 in Pell Lake, Wisconsin

Four objects were low in the night sky(about 500-700 ft up) in a diamond-shaped formation, moving from west to east. The size of the objects was as large as if you held up a dime at arms length. Their rate of speed was slow. They were silent.  Each of the objects was egg-shaped and emitted a soft neon-like color, almost like pastel.  
Each object was of a different color: the 'lead' was blue; the others were red, yellow and white. There were no physical obstructions for those observing the objects, such as trees or buildings. 
Most of the observers were senior individuals as they were there in the yard in celebration of a birthday. All saw the objects; some joked about them. 
The sighting itself captured my attention and I was awestruck at the beauty of what I was seeing.
Date may be approximate, although the witness does not indicate that fact.  PD