.Ext_ux_ColorPicker div {

    height: 195px;

    width: 195px;

    position: relative;

    overflow: hidden;

}



.Ext_ux_ColorPicker div canvas {

    position: absolute;

    top: 0;

    left: 0;

    cursor: pointer;

}



.Ext_ux_ColorPicker_spectrum {

    z-index: 1;

}



.Ext_ux_ColorPicker_luminance {

    z-index: 0;

}