customcolor-advanced_style.css

.raised:hover, 
.fab:hover,
a[data-role="button"]:hover {
  background: rgba(var(--accent),0.5) !important;
}

.subtitleappearance-preview {
  background: linear-gradient(140deg,rgb(var(--accent)),#111) !important;
}

.navMenuOption-selected {
  color: rgba(var(--accent));
}
.mdl-slider-background-lower {
  background-color: rgba(var(--accent));
}   

.playbackProgress>div {
  background-color: rgba(var(--accent),0.75);
}
progress::-moz-progress-bar {
  background-color: rgba(var(--accent),0.75);
}
progress::-webkit-progress-value {
  background-color: rgba(var(--accent),0.75);
}
.taskProgressInner {
  background: rgba(var(--accent),0.75) !important;
}

.transcodingProgress>div, 
.itemProgressBarForeground {
  background-color: rgba(var(--accent),0.35);
}

.mdl-slider-background-lower {
  background-color: rgb(var(--accent));
}
.mdl-slider::-moz-range-thumb {
  background: rgb(var(--accent));
}
.mdl-slider::-ms-thumb {
  background: rgb(var(--accent));
}
.mdl-slider::-webkit-slider-thumb {
  background: rgb(var(--accent));
}
.iconOsdProgressInner {
  background: rgb(var(--accent));
}

.paper-icon-button-light:hover,
.raised.homeLibraryButton:hover,
.button-flat:hover,
.playstatebutton-icon-played,
.ratingbutton-icon-withrating,
.paper-icon-button-light:hover:not(:disabled),
.emby-tab-button:hover,
.selectLabelFocused,
.inputLabelFocused,
.textareaLabelFocused,
.buttonActive,
.button-link {
  color: rgba(var(--accent)) !important;
}

#itemDetailPage .button-link {color: inherit !important;}

.navMenuOption:hover,
.actionSheetMenuItem:hover {
  background-color: rgba(var(--accent),0.5) !important;
}

.emby-checkbox:checked + span + .checkboxOutline,
.emby-textarea:focus,
.emby-select-withcolor:focus,
.emby-input:focus,
.itemSelectionPanel {
  border: 0.01em solid rgba(var(--accent),0.5) !important;
}

.mdl-spinner__layer-1 {
  border-color: rgba(var(--accent));
}
.mdl-switch__input:checked + .mdl-switch__label + .mdl-switch__trackContainer > .mdl-switch__track {
  background: rgba(var(--accent), 0.5);
}
.mdl-switch__input:checked + .mdl-switch__label + .mdl-switch__trackContainer > .mdl-switch__thumb {
  background: rgba(var(--accent));
}