.BPT-ToolbarButton .buttonIcon,
.Toolbar-ControlsButton .buttonIcon {
    background-color: transparent;
    display: inline-block;
    width: 16px;
    height: 16px;
    vertical-align: bottom;
    background-repeat: no-repeat;
}

.Toolbar-ControlsButton.FilterToggleButton:not([selected=true]):hover {
    border: 1px solid TRANSPARENT; /*[1px solid {f12-toolbar-button-border-hover-color}]*/
}

.BPT-ToolbarButton:not([disabled]):hover,
.Toolbar-ControlsButton:not([disabled]):hover {
    background-color: TRANSPARENT; /*[{f12-toolbar-button-hover-color}] */
}

.BPT-ToolbarButton:not([disabled]):not(.BPT-ToolbarToggleButton-StateOn):hover,
.Toolbar-ControlsButton:not([disabled]):not([selected=true]):hover {
    border: 1px solid TRANSPARENT; /*[1px solid {f12-toolbar-button-border-hover-color}]*/
}