I would propose something like this to start with: https://demo.sentido-labs.com/proposal/discoverdev/ https://demo.sentido-labs.com/proposal/discoverdev/ Tha

I would propose something like this to start with: https://demo.sentido-labs.com/proposal/discoverdev/ https://demo.sentido-labs.com/proposal/discoverdev/ That's just a .dark class in the body tag: <body class="dark" onload="document.querySelector('.dark-switch > input').onchange()"> ...a switch at the top right: <label class="dark-switch"><input type="checkbox" checked onchange="document.body.classList[this.checked?'add':'remove']('dark')"/> dark</label> ...and a bit of CSS: https://demo.sentido-labs.com/proposal/discoverdev/dark.css https://demo.sentido-labs.com/proposal/discoverdev/dark.css I also find the yellow-on-white links in your Twitter theme difficult to read.