NewGBAXL

There are 321 textures to replace. Vanit has done this already, but made custom textures. The Wii Virtual Console release includes official textures!

I just have to dump the textures and rename them, then use Vanit's patch.

I will not work on the project any further until I find a way to convert .t64 files to a viewable format like .png

https://gbatemp.net/download/new-2ds-xl-black-turquoise-theme.36930/
It complements the New 2DS XL Black & Turquoise model.

I am also working on a couple more themes for the 3DS. In the near future, I will release a Wii custom theme.

New 2DS XL Black & Lime custom theme is here! https://gbatemp.net/download/new-2ds-xl-black-lime-theme.36947/

Still attempting to force the Wii to load the GCN BIOS without Nintendont..

It is a new UI for Nintendont. Many people use forwarders for Wii games using their banners, but since GameCube games don't have those banners, I thought it would be better to have a separate menu. The forwarder is published https://gbatemp.net/download/gamecube-gx-usb-loader-gx-forwarder.36813/updates but currently forwards to USB Loader GX.

I am currently working on the UI. It will have 2 settings, start_Last_Title (opens the UI on a specific title or the last opened title) & use_Purple (changes PRESS START color), all other settings will be taken from the Nintendont settings.
If you know any C or are good with Wii banner edits and want to help, DM me

Ah, right; thanks for the explanation.
The image in the OP looks excellent, I have to say, though I do agree with allowing the user to change the text colour if they want.