Fair Oaks, CA 1990's UFO Sighting

I wish I could put a date to this.  I was very young roughly 4-6 but I want to say 5.  This puts the time frame between 1991 and 1993.  I believe it was in the late summer months possibly early fall.  It was dark so the time would be roughly 7pm to 9pm  PST.  Couldn't be much later than that I would've been forced into bed at  around 8:30.  Fair Oaks, CA.  Roughly 15-20 miles east of Sacramento.  Within 1/2 mile of the American River.
It was silent.  It was moving slow and seemed to be only 50-100ft off the ground.  It was disc for the most part much like if you were to take two plates and stack one upside down onto the other.  It wasn't just a disc shape though.  Imagine you have the two plates again now take 3-4 small plates, saucers, stacked properly or and set the original two on top of them.  That would be pretty much to scale.  A large disc section with this lower section roughly 2/3 the diameter of the main section protruding.  This lower section is round and flat on the bottom, it has a taper to it.  Smaller at the bottom tapering to somewhat larger where it was joined with the large disc section.  All around the edge smaller bottom section were panels, each a rectangle, but only about 30 around the entire ship.  These panels ran the entire height of the lower section, the bottom had no features that I recall.  Each panel lit with each color imaginable, changing colors every second, not in some un! iform pattern, it seemed each was doing its own thing.
I was on the lawn of my grandfathers house.  I believe some family members had been over that evening and they were about to leave.  There were roughly 5 of us out there.  I saw the craft, low and slow, going right down my street towards the river.  I reached out for it and started running after it as fast a small boy can.  I recall one of my sisters screaming at me to stop.  It was all so fast.  I reach out and start running, simultaneously she starts screaming, "No Matthew Stop!" I didn't.  I ran about 25 yards and I was keeping up with its slow pace but suddenly it sped up and I mean like snap your fingers, boom, it's gone.
I've asked all my sisters about this incident none of them recall this ever happening, but I know at least one of them was there.  Brought it up to a few family members but I don't get taken seriously.  Guess I'm crazy.
Witness indicates that date of the event is approximate.  We have assigned an arbitrary date.  PD