The people over on Ko-fi pointed out that Vaporeon had changed a lot since he was introduced way back in generation 1 so I made a sort of poll to ask which color schemes they prefered and I made the winners.
I did the same later for Flareon, the other two hadn't changed enough to warrant extra skins.
They're available for download over on this ko-fi post: https://ko-fi.com/i/IY8Y467KD6 (As well as an update to the Shugo Custom)
The extra skins require the original Eevee mod, so if you don't have it yet, you can find it here:
(sfw) - https://modthesims.info/m/10229022
(nsfw) - https://www.loverslab.com/profile/5702818-leljas/content/?type=downloads_file&ct=1618789747