Can someone better explain Colo Espeon and Umbreon pid generation to me?

[Zarganth]

I get that they are 7 frames apart generating wise however I just feel so dumbfounded to try and figure out a way I can create a pair that have ether decent natures or ivs while being considered legitimate by pkhex

 

overall this feels like a tough task, did see some programs for doing this however the better one made by one of the admins from the sounds of it i cant even access

ColoStarterGenerator - Replit

PerfectColoStarters - Replit

both of those just go to nothingness so I presume something better is out there, can't quite figure this out with RNG generator or with Pokefinder 

This feels like the last hurdle for me to overcome in regards to Gen 3 PID knowledge 

I would Like a better understanding of the process

originals had seed  4FDADC14

 

196 - ESPEON - FC17EB1757CD.ck3Fetching info... 197 - UMBREON - 796B5645954A.ck3Fetching info...

Edited April 14 by Zarganth
to add seed

[SkyLink98]

Afaik there's no public tool available to calculate valid spreads for Colo starters, unless recent Pokéfinder updates included it.

You can eventually look into PKHeX source code to understand how it works, though.

Here you have various methods to generate valid starters:

https://github.com/kwsch/PKHeX/blob/ba4d054089519162ddd719e8c762774171c58308/PKHeX.Core/Legality/RNG/CXD/MethodCXD.cs#L100

 

 

[Kaphotics]

If using the encounter database, PKHeX will generate starters for you.

If you have the TabsAsCriteria setting enabled, it will use the IVs and try to generate that specific IV spread. If you don't have the setting enabled (or if the IVs are not possible), then it will try to match the Trainer ID from tabs/trainer provided.