If you are uncertain on how to create the colour int object, you can use the Color Object instead.

It might be required for you to import the package if you encounter any issues, so better be safe than sorry and add the import.
import mods.contenttweaker.Color;

Static Methods are called on the package name and not on the Object itself.
All these Methods return a Color Object.

ZenMethod	Parameter Type
ZenMethod fromInt(color)	Parameter Type int
ZenMethod fromHex(color)	Parameter Type string

Nonstatic Methods are not called on the package name but on the Object itself.

ZenMethod	Return Type
ZenMethod getIntColor()	Return Type int