tabler/scss/vendor/_litepicker.scss

.litepicker {
  --litepicker-month-weekday-color: #{var(--#{$prefix}secondary)};
  --litepicker-button-prev-month-color: #{var(--#{$prefix}secondary)};
  --litepicker-button-next-month-color: #{var(--#{$prefix}secondary)};
  --litepicker-button-prev-month-color-hover: #{ var(--#{$prefix}primary) };
  --litepicker-button-next-month-color-hover: #{ var(--#{$prefix}primary) };
  --litepicker-day-color: var(--#{$prefix}body-color);
  --litepicker-day-color-hover: #{ var(--#{$prefix}primary) };
  --litepicker-is-end-color-bg: #{ var(--#{$prefix}primary) };
  --litepicker-is-today-color: #{ var(--#{$prefix}primary) };
  --litepicker-month-header-color: var(--#{$prefix}body-color);
  --litepicker-container-months-color-bg: var(--#{$prefix}bg-surface);
  font: inherit;
  user-select: none;

  svg {
    fill: none !important;
  }

  .container__main {
    border: var(--#{$prefix}border-width) var(--#{$prefix}border-style) var(--#{$prefix}border-color);
    border-radius: var(--#{$prefix}border-radius);
    box-shadow: none;
  }

  .container__months {
    .month-item-name,
    .month-item-year {
      font-weight: var(--#{$prefix}font-weight-medium) !important;
    }

    .button-next-month,
    .button-previous-month {
      cursor: pointer !important;
    }

    .month-item-weekdays-row {
      > div {
        padding: .5rem 0 !important;
        font-size: $h5-font-size;
      }
    }
  }

  .container__days {
    .day-item {
      cursor: pointer !important;
      padding: .5rem 0 !important;
      @include transition(color $transition-time, background-color $transition-time, border-color $transition-time);
    }
  }

  .datepicker-inline & {
    box-shadow: $input-box-shadow;
    
    .container__months {
      box-shadow: none;
      background-color: var(--#{$prefix}bg-forms);
    }
  }
}