iTop/css/backoffice/blocks-integrations/_jquery-blockui-within-datatable.scss

$ibo-vendors-blockui--blockoverlay--within--datatable--background-color: $ibo-color-white-100 !default;

.ibo-datatable .blockUI.blockOverlay{
  background-color: $ibo-vendors-blockui--blockoverlay--within--datatable--background-color;
}
.ibo-datatable .blockUI.blockMsg{
  font-size: 2em;
}