I setup my own color scheme to fit my needs/wants, follow the steps below to set it up and use it your self 😄
Open your PHPStorm Settings, goto Appearance & Behavior then select Material Custom Theme
Click the 3 dots on the right side to open the dropdown
Click Select XML File from Disk, then find where you downloaded the "color-config.xml" file to and select it.
Open your PHPStorm Settings, goto Editor, select Color Scheme then select Color Scheme Font
Click the 3 dots on the right side of "Scheme" to open the dropdown
Click Import Scheme, then find where you downloaded the "font-color-config.icls" file to and select it.
You will probably need to change the font you use in your IDE, unless you own MonoLisa
Back up your own settings before installing my configs, in-case you do not like them. At-least you will have an effortless revert.
My PHPStorm version is 2020.1.2, I don't know how these configs will affect higher/lower versions. Install at your own risk.