submit-social-housing-lettings-and-sales-data/app/frontend/styles/_panel.scss

.app-panel--interruption {
  background-color: govuk-colour("blue");
  color: govuk-colour("white");
  text-align: left;

  p,
  .govuk-body,
  .govuk-label,
  .govuk-fieldset__legend,
  .govuk-hint {
    color: govuk-colour("white");
  }

  a:not(:focus) {
    color: inherit;
  }

  *:last-child {
    margin-bottom: 0;
  }

  .govuk-radios__label:before,
  & :after {
    color: govuk-colour("black");
    border-color: govuk-colour("black");
    background-color: govuk-colour("white");
  }
}