However, to answer your question:
No, using the Shiny Cheat in SoulSilver will not make Pokémon eggs shiny. The cheat works by altering the game's code to make any Pokémon you encounter have a chance of being shiny. This doesn't affect the genetics of Pokémon that are bred from eggs.
Even if you hatch an egg from a Pokémon that was made shiny using a cheat, the offspring will still have the normal shiny odds.
Always be cautious when using cheats. They can have unintended consequences and may not work as expected.
If you're looking for a more legitimate way to get shiny Pokémon, consider:
* Breeding: This involves breeding Pokémon with specific IVs and natures, increasing your chances of getting a shiny.
* Masuda Method: This involves breeding Pokémon from different regions, further increasing your chances of getting a shiny.
* Shiny Hunting: This involves encountering as many Pokémon as possible until you encounter a shiny.
Remember, the joy of Pokémon is in the journey, and finding a shiny Pokémon the "right" way can be incredibly rewarding.