Writing the function is more important than changing the theme of your text editor. Your theme is already good enough.

Bloody is after I spent two days on it!

Seriously: your editor, terminal, compiler, keyboard, etc. are your tools. Apart from your mind and your focus, these are the most important things you have as a developer. Personalize them and make them as comfortable and as natural as you can. Working with tools you dislike or fight with will only slow you down, add to your stress, and make you miserable.

Now if all you do is fuck around with themes and settings all day, I'll fire you myself.