.spectrum-Popover {
  background-color: rgb(8, 8, 8);
  border-color: rgb(73, 73, 73);
  box-shadow: 0 1px 4px rgba(0,0,0,0.8);
}
.spectrum-Popover .spectrum-Dialog-header,
  .spectrum-Popover .spectrum-Dialog-footer,
  .spectrum-Popover .spectrum-Dialog-wrapper {
    background-color: transparent;
  }
.spectrum-Popover .spectrum-Popover-tip::after {
    background-color: rgb(8, 8, 8);
    border-color: rgb(73, 73, 73);
    box-shadow: -1px -1px 4px rgba(0,0,0,0.8);
  }