pgadmin4/web/pgadmin/static/scss/_codemirror.overrides.scss

/* To override inbuilt Green color for matchingbracket */
.cm-s-default .CodeMirror-matchingbracket {
    color:  $sql-bracket-match-fg !important;
    background-color: $sql-bracket-match-bg !important;
}

.CodeMirror {
  font-size: 1em;
  font-family: monospace, monospace;
  background-color: $color-editor-bg !important;
  color: $color-editor-fg;
  border-radius: inherit;
}

/* Ensure the codemirror editor displays full height gutters when resized */
.CodeMirror, .CodeMirror-gutter {
    height: 100% !important;
    min-height: 100% !important;
}

/*
 * Remove border right from "CodeMirror-gutters"
 * class because its height doesn't increase
 * with every new line added, instead add border
 * right to ".CodeMirror-linenumber" class which
 * adds a new div for every new line added
 */
.sql_field_layout .CodeMirror-gutters {
    border-right: none;
}

.sql_field_layout .CodeMirror-linenumber {
    border-right: 1px solid $color-gray-lighter;
}

/* class to disable Codemirror editor */
.cm_disabled {
  background: $input-disabled-bg;
}

/* make syntax-highlighting bold */
.cm-s-default {
  & .cm-quote {color: #090;}
  & .cm-keyword {color: $color-editor-keyword; font-weight: 600;}
  & .cm-atom {color: $color-editor-fg;}
  & .cm-number {color: $color-editor-number; font-weight: 600;}
  & .cm-def {color: $color-editor-fg;}
  & .cm-punctuation,
  & .cm-property,
  & .cm-operator { color: $color-editor-operator; }
  & .cm-variable {color: $color-editor-variable; }
  & .cm-variable-2,
  & .cm-variable-3,
  & .cm-type {color: $color-editor-variable-2;}
  & .cm-comment {color: $color-editor-comment;}
  & .cm-string {color: $color-editor-string;}
  & .cm-string-2 {color: $color-editor-string;}
  & .cm-meta {color: $color-editor-fg;}
  & .cm-qualifier {color: $color-editor-fg;}
  & .cm-builtin {color: $color-editor-builtin;}
  & .cm-bracket {color: $color-editor-bracket;}
  & .cm-tag {color: $color-editor-fg;}
  & .cm-attribute {color: $color-editor-fg;}
  & .cm-hr {color: $color-editor-fg;}
  & .cm-link {color: $color-editor-fg;}

  & :not(.cm-fat-cursor) .CodeMirror-cursor {
    border-left: thin solid $color-editor-fg;
    border-right: none;
    width: 0;
  }
}

/* Codemirror buttons */
.CodeMirror-dialog button {
    font-family: $font-family-primary;
    color: $color-primary-fg;
    font-size: 70%;
    background-image: -webkit-linear-gradient(top, $color-primary-light 0%, $color-primary 100%);
    background-image: -o-linear-gradient(top, $color-primary-light 0%, $color-primary 100%);
    background-image: -webkit-gradient(linear, left top, left bottom, from($color-primary-light), to($color-primary));
    background-image: linear-gradient(to bottom, $color-primary-light 0%, $color-primary 100%);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{$color-primary-light}', endColorstr='#{$color-primary}', GradientType=0);
    filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
    background-repeat: repeat-x;
    border-color: $color-primary;
    border-radius: 4px;
}

.CodeMirror-gutters {
  z-index: 2;
  background-color: $sql-gutters-bg;
  border-right: none;
}

/* workaround for codemirrors 'readOnly' option which is set to true instead of 'noCursor' */
.hide-cursor-workaround .CodeMirror-cursors {
  display: none;
}

.CodeMirror-linenumber {
  color: $color-fg;
}

.debugger-container .breakpoints {
  width: 0.9em;
}

.CodeMirror, .CodeMirror-gutters {
  min-height: 100%;
}

.CodeMirror-foldgutter {
  width: .9em;
}

.breakpoints {
  width: .9em;
  cursor: pointer;
}

.CodeMirror-foldgutter-open,
.CodeMirror-foldgutter-folded {
  cursor: pointer;
}

.CodeMirror-foldgutter-open:after {
  content: "\25BC";
  font-weight: 900;
}

.CodeMirror-foldgutter-folded:after {
  content: "\25B6";
  font-weight: 900;
}


.CodeMirror-foldmarker {
  color: $color-editor-foldmarker;
  text-shadow: #b9f 1px 1px 2px, #b9f -1px -1px 2px, #b9f 1px -1px 2px, #b9f -1px 1px 2px;
  font-family: $font-family-primary;
  line-height: .3;
  cursor: pointer;
}

.CodeMirror-hints {
  position: absolute;
  z-index: 10;
  overflow: hidden;
  list-style: none;

  margin: 0;
  padding: 0px;

  -webkit-box-shadow: $dropdown-box-shadow;
  -moz-box-shadow: $dropdown-box-shadow;
  box-shadow: $dropdown-box-shadow;
  border-radius: $border-radius;
  border: $panel-border;

  background: $sql-hint-bg;
  font-size: 90%;
  font-family: $font-family-editor !important;

  max-height: 20em;
  overflow-y: auto;

  & li {
    padding: 0.125rem;
    border-radius: 0rem;
    &.CodeMirror-hint-active {
      background: $sql-hint-active-bg;
      color: $sql-hint-active-fg;
    }
    & .sqleditor-hint {
      padding-left: 20px;
    }
  }
}

.CodeMirror .CodeMirror-selected {
  background: $sql-editor-selection-bg !important;
}

.CodeMirror-activeline-background {
  background: $color-editor-activeline !important;
}

.CodeMirror-simplescroll-horizontal {
    height: $scrollbar-width;
}

.CodeMirror-simplescroll-vertical {
    width: $scrollbar-width;
}

.CodeMirror-scrollbar-filler, .CodeMirror-simplescroll-horizontal, .CodeMirror-simplescroll-vertical {
    background-color: lighten($scrollbar-base-color, 15%);
}

.CodeMirror-simplescroll-horizontal, .CodeMirror-simplescroll-vertical {

    & div {
        border: 0.25rem solid transparent;
        border-radius: $border-radius*2;
        background-clip: content-box;
        background-color: rgba($scrollbar-base-color, 0.7);

        &:hover {
            background-color: $scrollbar-base-color;
        }
    }
}

.bg-gray-lighter {
  background-color: $sql-editor-disable-bg !important;
}

.sql-editor-mark {
  border-bottom: 2px dotted red;
}