I didn't ask about the hard coded colors, but how to set a custom text like the second image, where it's written "created by 2of3".
About windows colores, I'm asking about the overal theme color, set in the color preferences under themes, where you can chosse a default color for titlebars and other little pieces of windows, the theme I'm modding have red like the default color theme and I want to change it, but can't figure out where I can do it.