How to

you will need a extension called Stylus
once you added Stylus. click on it's icon by the address bar
when you see the "Want to continue using Stylus?" click Agree
then go to the three dots on Stylus and click on Create New Style
then copy the CSS code below
after that go to the Specify button and click it
go to URL and change it to URLs on the domain
type discord.com in the text felid
give the theme a name and thats it


/*Tap anywhere in black box to select all text*/

ytd-app {
background-image:url(https://ericnet.onthewifi.com/themes/YouTube-E621-Theme/background-bbf4af533456131bea3c.png) !important;
background-color:#020f23 !important;
}

html {
--yt-spec-additive-background: #152f56;
--yt-spec-text-primary: #fff !important;
--yt-spec-base-background: #152f56 !important;
    --yt-frosted-glass-desktop: #152f56 !important;
}

svg {
fill: rgba(252,191,49,1) !important;
}

.yt-spec-button-shape-next--mono.yt-spec-button-shape-next--tonal {
color: red !important;
}