I figured out how to add skins from Steam Customizer onto Steam for Linux (and possibly Mac)

[EatYourSheep]

Hello everyone! Steam Skin Customizer is an amazing program that is unfortunately does not properly support Linux or Mac yet. However I found a workaround.

You are going to need:
Wine
Know how to use Wine.
Steam download for windows.
Steam for Linux/Mac (obviously)

Step 1:
Make sure Steam is installed on wine and is ready to go.

Step 2:
Download the Steam Customizer Download Tool and install it.

Step 3:
Go back to your regular (Linux/Mac) browser and make your theme on the website like normal. When you are done download it.

Step 4:
Open the file with the Download Tool in Wine and apply it to Steam. (Note this will apply it for the Windows/Wine version of Steam)

Step 5: Exit Wine after it has applied it to Steam.

Step 6:

Go to your Wine Steam folder
It is located in /home/{USERNAME}/.wine/drive_c/Program Files (x84)/Steam on Linux
I think the .wine folder is located in your home folder on Mac.

Go to the folder without the “(x84)” if you can’t find Steam.

Step 7:
Go into your skins folder and copy the folder called "Enhanced Steam".

Step 8:
Now you want to open your regular Steam (your Linux/Mac one). While it is opening copy the file into your regular Steam's skins folder.

Step 9:

When Steam is open go into settings and apply the skin "Enhanced Steam".

Step 10:

Reboot Steam as you normally would when changing skins and there you go! Have fun!

Let me know if you want proof that this actually works. It will be in a form of a screen shot.

[⚡🍉OverlordTomala🍉⚡]

Or, open your Home directory and press Ctrl H, click on your .steam directory and paste your skins into the skins folder.

I find that to be much easier.