PixelPlacerBot/resources/css/palette-editor.css

.pickr {
    width: 100%;
    height: 36px;
}

.pickr .pcr-button {
    border: 1px solid black;
    border-radius: 4px;
    width: 100%;
    height: 36px;
}

#rename-palette-name {
    border-radius: 25px;
    text-align: center;
    vertical-align: middle;
}