Userscript that replaces the chess pieces on Lichess with Go stones. The intention is to provide a compromise between playing blind and non-blind chess.

GoPieces.user.js

// ==UserScript==
// @name          Lichess Pieces: Go
// @namespace     http://userstyles.org
// @description	  Go stones instead of chess pieces. Choose CANVAS board theme to activate the style.
// @author        oerpli
// @homepage      https://userstyles.org/styles/135471
// @include       http://lichess.org/*
// @include       https://lichess.org/*
// @include       http://*.lichess.org/*
// @include       https://*.lichess.org/*
// @run-at        document-start
// @version       0.9
// ==/UserScript==
(function() {var css = [
	"piece.pawn.black { background-image: url(\"https://svgshare.com/i/5gv.svg\")!important;} ",
	"	piece.knight.black { background-image: url(\"https://svgshare.com/i/5gv.svg\")!important;} ",
	"	piece.bishop.black { background-image: url(\"https://svgshare.com/i/5gv.svg\")!important;} ",
	"	piece.rook.black { background-image: url(\"https://svgshare.com/i/5gv.svg\")!important;} ",
	"	piece.queen.black { background-image: url(\"https://svgshare.com/i/5gv.svg\")!important;} ",
	"	piece.king.black { background-image: url(\"https://svgshare.com/i/5gv.svg\")!important;} ",
	"",
	"	piece.pawn.white { background-image: url(\"https://svgshare.com/i/5ih.svg\")!important;} ",
	"	piece.knight.white { background-image: url(\"https://svgshare.com/i/5ih.svg\")!important;} ",
	"	piece.bishop.white { background-image: url(\"https://svgshare.com/i/5ih.svg\")!important;} ",
	"	piece.rook.white { background-image: url(\"https://svgshare.com/i/5ih.svg\")!important;} ",
	"	piece.queen.white { background-image: url(\"https://svgshare.com/i/5ih.svg\")!important;} ",
	"	piece.king.white { background-image: url(\"https://svgshare.com/i/5ih.svg\")!important;}",
	"",
	"",
	".cg-square.last-move { background-color:rgba(255, 255, 0, 0.41) !important;} ",
	".canvas .is2d .cg-board, #top div.color_demo.canvas{",
	"background-image: url(http://s018.radikal.ru/i508/1611/ae/e805b6954066.png) ;",
	"}"
].join("\n");
if (typeof GM_addStyle != "undefined") {
	GM_addStyle(css);
} else if (typeof PRO_addStyle != "undefined") {
	PRO_addStyle(css);
} else if (typeof addStyle != "undefined") {
	addStyle(css);
} else {
	var node = document.createElement("style");
	node.type = "text/css";
	node.appendChild(document.createTextNode(css));
	var heads = document.getElementsByTagName("head");
	if (heads.length > 0) {
		heads[0].appendChild(node);
	} else {
		// no head yet, stick it whereever
		document.documentElement.appendChild(node);
	}
}
})();

Awesome. Thank you very much! Great boilerplate for other pieces as well.