mastodon/app/javascript/flavours/glitch/styles/mastodon-light.scss

// Set variables
$ui-base-color: #d9e1e8;
$ui-base-lighter-color: darken($ui-base-color, 57%);
$ui-highlight-color: #2b90d9;
$ui-primary-color: darken($ui-highlight-color, 28%);
$ui-secondary-color: #282c37;

$primary-text-color: black;
$base-overlay-background: $ui-base-color;

$login-button-color: white;
$account-background-color: white;

// Import defaults
@import 'index';

// Change the color of the log in button
.button {
  &.button-alternative-2 {
    color: $login-button-color;
  }
}

// Change columns' default background colors
.column {
  > .scrollable {
    background: lighten($ui-base-color, 13%);
  }
}

.status.collapsed .status__content:after {
  background: linear-gradient(rgba(lighten($ui-base-color, 13%), 0), rgba(lighten($ui-base-color, 13%), 1));
}

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

.drawer > .contents {
  background: $ui-base-color url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 234.80078 31.757813" width="234.80078" height="31.757812"><path d="M19.599609 0c-1.05 0-2.10039.375-2.90039 1.125L0 16.925781v14.832031h234.80078V17.025391l-16.5-15.900391c-1.6-1.5-4.20078-1.5-5.80078 0l-13.80078 13.099609c-1.6 1.5-4.19883 1.5-5.79883 0L179.09961 1.125c-1.6-1.5-4.19883-1.5-5.79883 0L159.5 14.224609c-1.6 1.5-4.20078 1.5-5.80078 0L139.90039 1.125c-1.6-1.5-4.20078-1.5-5.80078 0l-13.79883 13.099609c-1.6 1.5-4.20078 1.5-5.80078 0L100.69922 1.125c-1.600001-1.5-4.198829-1.5-5.798829 0l-13.59961 13.099609c-1.6 1.5-4.200781 1.5-5.800781 0L61.699219 1.125c-1.6-1.5-4.198828-1.5-5.798828 0L42.099609 14.224609c-1.6 1.5-4.198828 1.5-5.798828 0L22.5 1.125C21.7.375 20.649609 0 19.599609 0z" fill="#{hex-color(lighten($ui-base-color, 13%))}"/></svg>') no-repeat bottom / 100% auto !important;

  .mastodon {
    filter: contrast(75%) brightness(75%) !important;
  }
}

// Change the default appearance of the content warning button
.status__content {

  .status__content__spoiler-link {

    background: darken($ui-base-color, 30%);

    &:hover {
      background: darken($ui-base-color, 35%);
      text-decoration: none;
    }

  }

}

// Change the default appearance of the action buttons
.icon-button {

  &:hover,
  &:active,
  &:focus {
    color: darken($ui-base-color, 40%);
    transition: color 200ms ease-out;
  }

  &.disabled {
    color: darken($ui-base-color, 30%);
  }

}

.status {
  &.status-direct {
    .icon-button.disabled {
      color: darken($ui-base-color, 30%);
    }
  }
}

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

.dropdown-menu__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;
  }

}

.dropdown-menu__item {
  a {
    background: $ui-base-color;
    color: $ui-secondary-color;
  }
}

// Change the default color of several parts of the compose form
.composer {

  .composer--spoiler input, .composer--textarea textarea {
    color: darken($ui-base-color, 80%);

    &:disabled { background: darken($simple-background-color, 10%) }

    &::placeholder {
      color: darken($ui-base-color, 70%);
    }
  }

  strong {
    color: lighten($ui-secondary-color, 65%);
  }

  .composer--options {
    background: darken($ui-base-color, 10%);
    box-shadow: unset;
  }

  .composer--options--dropdown--content--item {
    color: $ui-primary-color;
    
    strong {
      color: $ui-primary-color;
    }

  }

}

// Change the default color used for the text in an empty column or on the error column
.empty-column-indicator,
.error-column {
  color: darken($ui-base-color, 60%);
}

// Change the default colors used on some parts of the profile pages
.activity-stream-tabs {

  background: $account-background-color;

  a {
    &.active {
      color: $ui-primary-color;
      }
  }

}

.activity-stream {

  .entry {
    background: $account-background-color;
  }

  .status.light {

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

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

  }

}

.accounts-grid {
  .account-grid-card {

    .controls {
      .icon-button {
        color: $ui-secondary-color;
      }
    }

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

    .username {
      color: $ui-secondary-color;
    }

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

  }
}