MediaWiki:Bullets.css

//vector list-style-image: url("https://playground.amazingwikis.org/wiki/images/general/Playground/e/ef/BulletPokeballClosed.png") !important; }
 * 1) mw-panel .portal .body ul {

list-style-image: url("https://playground.amazingwikis.org/wiki/images/general/Playground/4/49/BulletPokeballOpen.png") !important; }
 * 1) mw-panel .portal .body li:hover {

// monobook list-style-image : url("https://playground.amazingwikis.org/wiki/images/general/Playground/e/ef/BulletPokeballClosed.png") !important; }
 * 1) column-one ul li {

list-style-image: url("https://playground.amazingwikis.org/wiki/images/general/Playground/4/49/BulletPokeballOpen.png") !important; }
 * 1) column-one ul li:hover {

// wikilayout ul.portal li { list-style-image : url("https://playground.amazingwikis.org/wiki/images/general/Playground/e/ef/BulletPokeballClosed.png") !important; }

ul.portal li:hover { list-style-image: url("https://playground.amazingwikis.org/wiki/images/general/Playground/4/49/BulletPokeballOpen.png") !important; }