Updating multiple skins at once?

[JMEWLS`]

I know there's a parent skin, and child skin feature. But it doesn't work when updating templates. What's the quickest and easiest way to update them all simultaneously.

[Dismounted]

Parents and children only work if the template changes are uniform across all styles in that "family". That is, children will only update if their templates have not been modified (different to the parent).

[JMEWLS`]

Parents and children only work if the template changes are uniform across all styles in that "family". That is, children will only update if their templates have not been modified (different to the parent).

They are all the same, except each of them are different color. Except for the post bit template, which has a minor tweak to each color. (I coded it badly)

Will that mean I can update templates throughout the styles simultaneously? Because right now, it doesn't work.