Modern kit creators offer granular control that goes far beyond the original 2013 limitations:
A more recent modification of the classic PC editor, this tool simplifies the process of adding new teams and assigning them custom kits. Core Features of a Kit Creator
Customize the font style, color, and size of player names and squad numbers. How to Import Your Custom Kit
You must have Kitserver13 installed in your PES 2013 directory.
Navigate to kitserver13/GDB/uni/ and find (or create) the folder for your chosen team.
Advanced editors allow you to adjust the transparency of certain patterns or use masks to ensure designs don't overlap onto collars or cuffs.
This is widely considered the gold standard for modern PES and eFootball kit design. It is a browser-based tool featuring a 3D live preview that allows you to rotate and zoom in on your jersey as you work. It offers a flexible layer system for adding complex patterns, stripes, and gradients.
Ensure the manager.exe within your Kitserver folder is "Attached" to the game executable.