mastodon/app/javascript/styles/mastodon-light/diff.scss

// Notes!
// Sass color functions, "darken" and "lighten" are automatically replaced.

// Change the colors of button texts
.button {
  color: $white;

  &.button-alternative-2 {
    color: $white;
  }
}

// Change default background colors of columns
.column {
  > .scrollable {
    background: $white;
  }
}

.drawer__inner {
  background: $ui-base-color;
}

.drawer__inner__mastodon {
  background: $ui-base-color url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 234.80078 31.757813" width="234.80078" height="31.757812"><path d="M19.599609 0c-1.05 0-2.10039.375-2.90039 1.125L0 16.925781v14.832031h234.80078V17.025391l-16.5-15.900391c-1.6-1.5-4.20078-1.5-5.80078 0l-13.80078 13.099609c-1.6 1.5-4.19883 1.5-5.79883 0L179.09961 1.125c-1.6-1.5-4.19883-1.5-5.79883 0L159.5 14.224609c-1.6 1.5-4.20078 1.5-5.80078 0L139.90039 1.125c-1.6-1.5-4.20078-1.5-5.80078 0l-13.79883 13.099609c-1.6 1.5-4.20078 1.5-5.80078 0L100.69922 1.125c-1.600001-1.5-4.198829-1.5-5.798829 0l-13.59961 13.099609c-1.6 1.5-4.200781 1.5-5.800781 0L61.699219 1.125c-1.6-1.5-4.198828-1.5-5.798828 0L42.099609 14.224609c-1.6 1.5-4.198828 1.5-5.798828 0L22.5 1.125C21.7.375 20.649609 0 19.599609 0z" fill="#{hex-color($white)}"/></svg>') no-repeat bottom / 100% auto;
}

// Change the colors used in compose-form
.compose-form {
  .compose-form__modifiers {
    .compose-form__upload__actions .icon-button {
      color: lighten($white, 7%);

      &:active,
      &:focus,
      &:hover {
        color: $white;
      }
    }

    .compose-form__upload-description input {
      color: lighten($white, 7%);

      &::placeholder {
        color: lighten($white, 7%);
      }
    }
  }

  .compose-form__buttons-wrapper {
    background: darken($ui-base-color, 6%);
  }

  .autosuggest-textarea__suggestions {
    background: lighten($ui-base-color, 4%);
  }

  .autosuggest-textarea__suggestions__item {
    &:hover,
    &:focus,
    &:active,
    &.selected {
      background: lighten($ui-base-color, 4%);
    }
  }
}

.emoji-mart-bar {
  border-color: lighten($ui-base-color, 4%);

  &:first-child {
    background: darken($ui-base-color, 6%);
  }
}

.emoji-mart-search input {
  background: rgba($ui-base-color, 0.3);
  border-color: $ui-base-color;
}

// Change the background colors of statuses
.focusable:focus {
  background: $ui-base-color;
}

.status.status-direct {
  background: lighten($ui-base-color, 4%);
}

.focusable:focus .status.status-direct {
  background: lighten($ui-base-color, 8%);
}

.detailed-status,
.detailed-status__action-bar {
  background: darken($ui-base-color, 6%);
}

// Change the background colors of status__content__spoiler-link
.reply-indicator__content .status__content__spoiler-link,
.status__content .status__content__spoiler-link {
  background: $ui-base-lighter-color;

  &:hover {
    background: lighten($ui-base-lighter-color, 6%);
  }
}

// Change the background colors of media and video spoilers
.media-spoiler,
.video-player__spoiler {
  background: $ui-base-color;
}

.account-gallery__item a {
  background-color: $ui-base-color;
}

// Change the colors used in the dropdown menu
.dropdown-menu {
  background: $ui-base-color;

  &__arrow {
    &.left {
      border-left-color: $ui-base-color;
    }

    &.top {
      border-top-color: $ui-base-color;
    }

    &.bottom {
      border-bottom-color: $ui-base-color;
    }

    &.right {
      border-right-color: $ui-base-color;
    }
  }

  &__item {
    a {
      background: $ui-base-color;
      color: $darker-text-color;
    }
  }
}

// Change the text colors on inverted background
.privacy-dropdown__option.active .privacy-dropdown__option__content,
.privacy-dropdown__option.active .privacy-dropdown__option__content strong,
.privacy-dropdown__option:hover .privacy-dropdown__option__content,
.privacy-dropdown__option:hover .privacy-dropdown__option__content strong,
.dropdown-menu__item a:active,
.dropdown-menu__item a:focus,
.dropdown-menu__item a:hover,
.actions-modal ul li:not(:empty) a.active,
.actions-modal ul li:not(:empty) a.active button,
.actions-modal ul li:not(:empty) a:active,
.actions-modal ul li:not(:empty) a:active button,
.actions-modal ul li:not(:empty) a:focus,
.actions-modal ul li:not(:empty) a:focus button,
.actions-modal ul li:not(:empty) a:hover,
.actions-modal ul li:not(:empty) a:hover button,
.admin-wrapper .sidebar ul ul a.selected,
.simple_form .block-button,
.simple_form .button,
.simple_form button {
  color: $white;
}

// Change the background colors of modals
.actions-modal,
.boost-modal,
.confirmation-modal,
.mute-modal,
.report-modal,
.embed-modal,
.error-modal,
.onboarding-modal {
  background: $ui-base-color;
}

.boost-modal__action-bar,
.confirmation-modal__action-bar,
.mute-modal__action-bar,
.onboarding-modal__paginator,
.error-modal__footer {
  background: darken($ui-base-color, 6%);

  .onboarding-modal__nav,
  .error-modal__nav {
    &:hover,
    &:focus,
    &:active {
      background-color: darken($ui-base-color, 12%);
    }
  }
}

.display-case__case {
  background: $white;
}

.embed-modal .embed-modal__container .embed-modal__html {
  background: $white;

  &:focus {
    background: darken($ui-base-color, 6%);
  }
}

.react-toggle-track {
  background: $ui-secondary-color;
}

.react-toggle:hover:not(.react-toggle--disabled) .react-toggle-track {
  background: darken($ui-secondary-color, 10%);
}

.react-toggle.react-toggle--checked:hover:not(.react-toggle--disabled) .react-toggle-track {
  background: lighten($ui-highlight-color, 10%);
}

// Change the default color used for the text in an empty column or on the error column
.empty-column-indicator,
.error-column {
  color: $primary-text-color;
}

// Change the default colors used on some parts of the profile pages
.activity-stream-tabs {
  background: $account-background-color;
  border-bottom-color: lighten($ui-base-color, 8%);
}

.activity-stream {
  .entry {
    background: $account-background-color;

    .detailed-status.light,
    .more.light,
    .status.light {
      border-bottom-color: lighten($ui-base-color, 8%);
    }
  }

  .status.light {
    .status__content {
      color: $primary-text-color;
    }

    .display-name {
      strong {
        color: $primary-text-color;
      }
    }
  }
}

.accounts-grid {
  .account-grid-card {
    .controls {
      .icon-button {
        color: $darker-text-color;
      }
    }

    .name {
      a {
        color: $primary-text-color;
      }
    }

    .username {
      color: $darker-text-color;
    }

    .account__header__content {
      color: $primary-text-color;
    }
  }
}