This site shows a horse born in 1985
http://www.brookridgemorgans.com/glory.htm
called 99240 1985 S Palomino GOLDEN SONFIELD (out of SHAWALLA STORMY) and sired by a well known Rose Bowl parade horse (see site for more info)
The name Sonfeild seems to go with the stable name Sonny which is why I suggest it as a possibility. But that horse is listed as a stallion being used at stud. And of course its a morgan not a quarter horse. However it might be the site owner who did the article would have some clues for you as involved in the palomino's in the parade as they seem to be over a long period of time.
You might also see if anyone in this group The Rose Bowl Riders remembers your horse. This site has contact info
www.rosebowlriders.org/?goto=Home
You might also check with the mounted police who ride palominos in the parade
http://v6.pasadenastarnews.com/Stories/0,1413,206~26517~2595452,00.html
And you might go to the parade organizers to see if there is history of the riders in the years you think he may have been in the parade.
That would give you some directions to try anyhow.
Hope this helps you!
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