rstudio-scss/_rstudio-dark.scss

.ace_gutter {
	background: $ui-gutter-background;
	color: $ui-gutter-color;
}
.ace_print-margin {
	width: 2px;
	background: $ui-margin-line;
}
.ace_editor {
	background-color: $ui-background;
	color: $ui-foreground;
}
.rstudio-themes-flat {
	&.ace_editor_theme {
		background-color: $ui-background;
		color: $ui-foreground;
		.profvis-flamegraph {
			background-color: $ui-background;
			color: $ui-foreground;
		}
	}
	.ace_editor_theme {
		background-color: $ui-background;
		color: $ui-foreground;
	}
	&.editor_dark.ace_editor_theme a {
		color: #FFF !important;
	}
	&.rstudio-themes-dark-menus .ace_editor.ace_autocomplete {
		background: #2f3941;
		border: solid 1px #4e5c68 !important;
		color: #f0f0f0;
		.ace_marker-layer {
			.ace_active-line {
				background: transparentize($ui-foreground, 0.75);
				border: none;
			}
			.ace_line-hover {
				background: transparentize($ui-foreground, 0.75);
				border: none;
			}
		}
	}
}
.ace_cursor {
	color: $ui-cursor;
}
.ace_marker-layer {
	.ace_selection {
		background: $ui-selection;
	}
	.ace_step {
		background: lighten($rlang-string, 10%);
	}
	.ace_bracket {
		margin: -1px 0 0 -1px;
		border: 1px solid $ui-bracket;
	}
	.ace_active-line {
		background: $ui-line-active;
	}
	.ace_selected-word {
		border: 1px solid $ui-selection;
	}
	.ace_foreign_line {
		position: absolute;
		z-index: -1;
		background-color: $ui-code-chunk-background;
	}
	.ace_active_debug_line {
		position: absolute;
		z-index: -1;
		background-color: $ui-debug-background;
	}
	.ace_find_line {
		position: absolute;
		z-index: -1;
		background-color: $ui-line-find;
	}
}
.ace_gutter-active-line {
	background-color: $ui-line-active-gutter;
}
.ace_fold {
	background-color: $ui-fold-arrows-background;
	border-color: $ui-fold-arrows-color;
}
.ace_indent-guide{
	border-right: 1px solid $ui-indent_guide;
}
.ace_active-line ~ .ace_selection.ace_start {
	background-color: opacify($ui-line-active, 1);
}
.ace_keyword {
	font-style: italic;
	color: $rlang-reserved;
	&.ace_operator {
		font-style: normal;
		color: $rlang-operator;
	}
	&.ace_other.ace_unit {
		font-style: normal;
		color: $rlang-value;
	}
}
.ace_constant {
	&.ace_language {
		color: $rlang-message;
	}
	&.ace_numeric {
		color: $rlang-value;
	}
	&.ace_character {
		color: $rlang-value;
	}
	&.ace_other {
		color: $ui-foreground;
	}
}
.ace_support {
	&.ace_function {
		color: $rlang-function;
	}
	&.ace_constant {
		color: $rlang-value;
	}
	&.ace_class {
		font-style: $rlang-namespace-font-style;
		color: $rlang-namespace;
	}
	&.ace_type {
		color: $rlang-namespace;
	}
}
.ace_paren {
	&.ace_keyword.ace_operator {
		color: $rlang-bracket;
	}
}
.ace_storage {
	color: $rlang-reserved;
	&.ace_type {
		color: $rlang-reserved;
	}
}
.ace_invalid {
	background-color: transparentize($rlang-variable, 0.5);
	&.ace_deprecated {
		background-color: transparentize($rlang-reserved, 0.5);
	}
}
.ace_string {
	color: $rlang-string;
}
.ace_comment {
	color: $rlang-comment;
}
.ace_invisible {
	color: $ui-invisible;
}
.ace_variable {
	color: $rlang-variable;
	&.ace_parameter {
		color: $rlang-value;
	}
}
.ace_entity {
	&.ace_name {
		&.ace_function {
			color: $rlang-function;
		}
		&.ace_tag {
			color: $other-tag;
		}
	}
	&.ace_other.ace_attribute-name {
		color: $rlang-reserved;
	}
}
.ace_bracket {
	margin: 0 !important;
	border: 0 !important;
	background-color: $ui-bracket;
}
.ace_console_error {
	background-color: $ui-line-find;
}
.ace_layer {
	z-index: 3;
	&.ace_print-margin-layer {
		z-index: 2;
	}
	&.ace_marker-layer {
		z-index: 1;
	}
}
.ace_selection.ace_start {
	box-shadow: 0 0 3px 0 $ui-background;
	border-radius: 2px;
}
.ace_meta.ace_tag {
	color: $rlang-operator;
}
.ace_markup.ace_heading {
	font-weight: 600;
	color: $rlang-string;
}
.nocolor.ace_editor .ace_line span {
	color: $rlang-reserved !important;
}