.block-palette > image {

    background-image: url('resource:///org/chrysalide/gui/core/images/palette.png');

}

.block-collapse > image {

    background-image: url('resource:///org/chrysalide/gui/core/images/collapse.png');

}

.block-expand > image {

    background-image: url('resource:///org/chrysalide/gui/core/images/expand.png');

}