While city officials continue to debate the future of Richmond's prospects in minor-league baseball, the ripples of the stalemate will certainly be felt this year as far as exploding light shows are concerned. With The Diamond closed on the Fourth of July, Richmonders have one less option for witnessing the fireworks. Acting as a somewhat distant surrogate, Colonial Downs takes over the all-important task of detonating colorful chemicals in the sky and adds horse racing and live music at 6 p.m. If a venture down the highway isn't your style, Dogwood Dell holds its Fourth of July celebration in Byrd Park at 5 p.m. Colonial Downs: 966-7223. $2. Byrd Park: 646-3355 and free.