diff --git a/extensions/ql-vscode/media/dark/check.svg b/extensions/ql-vscode/media/dark/check.svg
deleted file mode 100644
index 0685a867c..000000000
--- a/extensions/ql-vscode/media/dark/check.svg
+++ /dev/null
@@ -1,56 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   height="30px"
-   width="30px"
-   fill="#000000"
-   version="1.1"
-   x="0px"
-   y="0px"
-   viewBox="0 0 100 100"
-   style="enable-background:new 0 0 100 100;"
-   xml:space="preserve"
-   id="svg3895"
-   sodipodi:docname="check-dark-mode.svg"
-   inkscape:version="0.92.3 (2405546, 2018-03-11)"><metadata
-     id="metadata3901"><rdf:RDF><cc:Work
-         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
-     id="defs3899" /><sodipodi:namedview
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1"
-     objecttolerance="10"
-     gridtolerance="10"
-     guidetolerance="10"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:window-width="1179"
-     inkscape:window-height="701"
-     id="namedview3897"
-     showgrid="false"
-     inkscape:zoom="7.8666667"
-     inkscape:cx="-22.881356"
-     inkscape:cy="15"
-     inkscape:window-x="0"
-     inkscape:window-y="28"
-     inkscape:window-maximized="0"
-     inkscape:current-layer="svg3895" /><g
-     transform="translate(-452.57627,-74.457627)"
-     id="g3893"
-     style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-opacity:1"><g
-       id="g3891"
-       style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-opacity:1"><g
-         id="g3889"
-         style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-opacity:1"><path
-           d="M 457.98136,131.82373 488.80508,163.49492 548.8661,92.416949 535.93729,81.60678 487.85763,144.41695 468.2678,120.58983 Z"
-           id="path3887"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccccc"
-           style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-opacity:1" /></g></g></g></svg>
\ No newline at end of file
diff --git a/extensions/ql-vscode/media/light/check.svg b/extensions/ql-vscode/media/light/check.svg
deleted file mode 100644
index 8ddd14da2..000000000
--- a/extensions/ql-vscode/media/light/check.svg
+++ /dev/null
@@ -1,57 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   height="30px"
-   width="30px"
-   fill="#000000"
-   version="1.1"
-   x="0px"
-   y="0px"
-   viewBox="0 0 100 100"
-   style="enable-background:new 0 0 100 100;"
-   xml:space="preserve"
-   id="svg3895"
-   sodipodi:docname="check.svg"
-   inkscape:version="0.92.3 (2405546, 2018-03-11)"><metadata
-     id="metadata3901"><rdf:RDF><cc:Work
-         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
-     id="defs3899" /><sodipodi:namedview
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1"
-     objecttolerance="10"
-     gridtolerance="10"
-     guidetolerance="10"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:window-width="1179"
-     inkscape:window-height="701"
-     id="namedview3897"
-     showgrid="false"
-     inkscape:zoom="7.8666667"
-     inkscape:cx="15"
-     inkscape:cy="15"
-     inkscape:window-x="0"
-     inkscape:window-y="28"
-     inkscape:window-maximized="0"
-     inkscape:current-layer="svg3895" /><g
-     transform="translate(-452.57627,-74.457627)"
-     id="g3893"
-     style="fill:#000000;fill-opacity:1;stroke:#ffffff;stroke-opacity:1"><g
-       id="g3891"
-       style="fill:#000000;fill-opacity:1;stroke:#ffffff;stroke-opacity:1"><g
-         id="g3889"
-         style="fill:#000000;fill-opacity:1;stroke:#ffffff;stroke-opacity:1"><path
-           d="M 457.98136,131.82373 488.80508,163.49492 548.8661,92.416949 535.93729,81.60678 487.85763,144.41695 468.2678,120.58983 Z"
-           id="path3887"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccccc"
-           style="fill:#000000;fill-opacity:1;stroke:#ffffff;stroke-opacity:1" /></g></g></g></svg>
-
diff --git a/extensions/ql-vscode/media/red-x.svg b/extensions/ql-vscode/media/red-x.svg
deleted file mode 100644
index 51714ed34..000000000
--- a/extensions/ql-vscode/media/red-x.svg
+++ /dev/null
@@ -1,58 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   height="30px"
-   width="30px"
-   fill="#000000"
-   version="1.1"
-   x="0px"
-   y="0px"
-   viewBox="0 0 100 100"
-   style="enable-background:new 0 0 100 100;"
-   xml:space="preserve"
-   id="svg3895"
-   sodipodi:docname="red-x.svg"
-   inkscape:version="0.92.3 (2405546, 2018-03-11)"><metadata
-     id="metadata3901"><rdf:RDF><cc:Work
-         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
-     id="defs3899" /><sodipodi:namedview
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1"
-     objecttolerance="10"
-     gridtolerance="10"
-     guidetolerance="10"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:window-width="1179"
-     inkscape:window-height="701"
-     id="namedview3897"
-     showgrid="false"
-     inkscape:zoom="7.8666667"
-     inkscape:cx="-22.881356"
-     inkscape:cy="15"
-     inkscape:window-x="33"
-     inkscape:window-y="36"
-     inkscape:window-maximized="0"
-     inkscape:current-layer="svg3895" /><rect
-     style="opacity:1;vector-effect:none;fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:2.24023867;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-     id="rect29"
-     width="15.499873"
-     height="88.381233"
-     x="-8.3491764"
-     y="27.119303"
-     transform="matrix(-0.70710678,0.70710678,0.70710678,0.70710678,0,0)" /><rect
-     style="fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:2.24023867;stroke-opacity:1"
-     id="rect29-6"
-     width="15.499873"
-     height="88.381233"
-     x="63.559982"
-     y="-44.789856"
-     transform="rotate(45)" /></svg>
\ No newline at end of file
diff --git a/extensions/ql-vscode/src/databases-ui.ts b/extensions/ql-vscode/src/databases-ui.ts
index 80f7ac2de..e667f6d05 100644
--- a/extensions/ql-vscode/src/databases-ui.ts
+++ b/extensions/ql-vscode/src/databases-ui.ts
@@ -10,6 +10,8 @@ import {
   window,
   env,
   CancellationToken,
+  ThemeIcon,
+  ThemeColor,
 } from "vscode";
 import { pathExists, stat, readdir, remove } from "fs-extra";
 
@@ -39,33 +41,6 @@ import { Credentials } from "./authentication";
 import { QueryRunner } from "./queryRunner";
 import { isCanary } from "./config";
 
-type ThemableIconPath = { light: string; dark: string } | string;
-
-/**
- * Path to icons to display next to currently selected database.
- */
-const SELECTED_DATABASE_ICON: ThemableIconPath = {
-  light: "media/light/check.svg",
-  dark: "media/dark/check.svg",
-};
-
-/**
- * Path to icon to display next to an invalid database.
- */
-const INVALID_DATABASE_ICON: ThemableIconPath = "media/red-x.svg";
-
-function joinThemableIconPath(
-  base: string,
-  iconPath: ThemableIconPath,
-): ThemableIconPath {
-  if (typeof iconPath == "object")
-    return {
-      light: join(base, iconPath.light),
-      dark: join(base, iconPath.dark),
-    };
-  else return join(base, iconPath);
-}
-
 enum SortOrder {
   NameAsc = "NameAsc",
   NameDesc = "NameDesc",
@@ -87,10 +62,7 @@ class DatabaseTreeDataProvider
   );
   private currentDatabaseItem: DatabaseItem | undefined;
 
-  constructor(
-    private databaseManager: DatabaseManager,
-    private readonly extensionPath: string,
-  ) {
+  constructor(private databaseManager: DatabaseManager) {
     super();
 
     this.currentDatabaseItem = databaseManager.currentDatabaseItem;
@@ -135,16 +107,11 @@ class DatabaseTreeDataProvider
   public getTreeItem(element: DatabaseItem): TreeItem {
     const item = new TreeItem(element.name);
     if (element === this.currentDatabaseItem) {
-      item.iconPath = joinThemableIconPath(
-        this.extensionPath,
-        SELECTED_DATABASE_ICON,
-      );
+      item.iconPath = new ThemeIcon("check");
+
       item.contextValue = "currentDatabase";
     } else if (element.error !== undefined) {
-      item.iconPath = joinThemableIconPath(
-        this.extensionPath,
-        INVALID_DATABASE_ICON,
-      );
+      item.iconPath = new ThemeIcon("error", new ThemeColor("errorForeground"));
     }
     item.tooltip = element.databaseUri.fsPath;
     item.description = element.language;
@@ -229,7 +196,7 @@ export class DatabaseUI extends DisposableObject {
     super();
 
     this.treeDataProvider = this.push(
-      new DatabaseTreeDataProvider(databaseManager, extensionPath),
+      new DatabaseTreeDataProvider(databaseManager),
     );
     this.push(
       window.createTreeView("codeQLDatabases", {