Here is the LPX 10.2.1 compliant version of the ‘classic’ Logic stock plugins by Attracks’s Pilot. (Goes well together with the Green theme.)
He is trying to modify the new plugin skins, too. In that case I will update this post later.
See comment below on how precisely to install these. You must do some modifications as well to use them.
(See also previous post for Alchemy skin.)