Use the plugin or raid finder to find a shiny seed,
then you probably edit that seed in.
No clue if the hash needs to be fixed.
edit: From what I can tell, you edit the DenType and Flags to set the options below.
If Dentype is 1, Dentype is active, if Dentype is 2, it's active and it's rare. If DenType is 3, it's event raid and active.
For event raid, recommend setting flags to 3 to.
As for Randroll, it control what species appear. Species that are typically 5% encounter chance, are the last 5% from 0 - 99. Meaning they'll be 94 - 99.