A new version for Logic 10.4 by ru2b12 and Attracks Pilot. Download here: https://www.dropbox.com/s/zn96kgdmivoy3d6/Bright%20Green%20Theme%20%28ru2b12%29.zip?dl=0 Advertisements
He has some very nice skins for 10.2.4, both Retina and non-Retina versions. He asks for a small donation, it seems to me. Fair enough. Go here to see the themes: http://logicxcasoriathemes.jimdo.com/themes-for-10-2-4/ Then you must send him email to his address (it’s mentioned there).
So far, it seems that the GUIs made for 10.1 work fine. Just follow the back-up and installation instructions as usual. Some discussion here: https://www.gearslutz.com/board/logic-pro-x/990155-logic-pro-x-10-1-1-out.html