attribute-type-selector-component {
	.small-action-button {
		margin: -3px 5px 0px 5px;
		display: inline-block;
		position: absolute;
		right: 0;

		display: inline-block;
		height: 24px;
		width: 24px;
		vertical-align: top;

		.md-fab {
			min-height: 0;
			width: 100%;
			height: 100%;
			margin: 0;
			text-transform: unset !important;

			.symbol {
				position: absolute;
				top: -16px;
				left: 8px;
			}
		}

		&.transparent .md-fab {
			background-color: transparent !important;
			box-shadow: none;

			&:hover {
				background-color: #ddd !important;
			}
		}
	}
}

attribute-type-selector-component {
	.small-action-button {
		margin: -3px 5px 0px 5px;
		display: inline-block;
		position: absolute;
		right: 0;

		display: inline-block;
		height: 24px;
		width: 24px;
		vertical-align: top;

		.md-fab {
			min-height: 0;
			width: 100%;
			height: 100%;
			margin: 0;
			text-transform: unset !important;

			.symbol {
				position: absolute;
				top: -16px;
				left: 8px;
			}
		}

		&.transparent .md-fab {
			background-color: rgba(230, 230, 230, 0.96);
			box-shadow: none;

			&:hover {
				background-color: rgb(200, 200, 200) !important;
			}
		}
	}
}

Add background color to button
Add background color to button
