Postbit...

[iBardia]

Is there a way to make one skin have Postbit, and another have Postbit_Legacy?

[Qleb]

yes

change the class tags for one of them and post the new class tags in your css style

like

class="alt1"

change it to class="post_red"

then go to your css style and type this

.post_red {
background = ff0000;
}

this well help you to make ur own postbit or postbit_legacy as ur needs