This PR updates the UI of the client, applying images based on an RM2K theme (Yume Nikki by default). The images in the ui folder can easily be swapped out for others to fit the game being hosted. Modify as necessary.
If you'd like a particular menu from a game converted to use these images, I have an unhosted tool I use to convert them, so just contact me if you'd like me to convert it to usable images.
Flashfyre
commented
2 years ago 
This PR updates the UI of the client, applying images based on an RM2K theme (Yume Nikki by default). The images in the ui folder can easily be swapped out for others to fit the game being hosted. Modify as necessary.
This styling method is largely borrowed from my own project and you can see examples of ui folders here: https://github.com/Flashfyre/Yume-2kki-Explorer/tree/master/public/images/ui
If you'd like a particular menu from a game converted to use these images, I have an unhosted tool I use to convert them, so just contact me if you'd like me to convert it to usable images.