Simple theme addition

[LunarMarathon]

Description

Fixes #5

Type of change

Please delete options that are not relevant. For the item that is relevant mark it completed as - [x] text here

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

E.g.

• manually ran the program

• 

Checklist:

Mark as completed - [x] text here

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented on my code, particularly in hard-to-understand areas
• [x] My changes generate no new warnings

[LunarMarathon]

@TechWiz-3 Please review. I hope it's done lol

[TechWiz-3]

Brother I will star your repos and send you coffee and attend your wedding!

[LunarMarathon]

Sis* 😅. It's ok haha. Thanks for the learning experience! I'll learn more and contribute for harder issues next time :)

[TechWiz-3]

Good on you sis 💪