diff --git a/src/components/App.css b/src/components/App.css
index b0749d1..97cc391 100644
--- a/src/components/App.css
+++ b/src/components/App.css
@@ -1,6 +1,6 @@
 body {
-    background-color: #141414;
-    color: #eee;
+    background-color: var(--background-color);
+    color: var(--text-color);
     font-family: monospace;
 }
 
@@ -29,10 +29,10 @@ button,
 select {
     font-size: inherit;
     font-family: inherit;
-    background: #fff2;
+    background: var(--layer-color);
     border-radius: 8px;
     border: none;
-    color: #eee;
+    color: var(--text-color);
     padding-inline: 8px;
     padding-block: 4px;
     outline: none;
@@ -43,27 +43,27 @@ input[type="file"].non-transparent::file-selector-button,
 input[type="text"].non-transparent,
 button.non-transparent,
 select.non-transparent {
-    background: #222;
-    border: 2px solid #444;
+    background: var(--layer-color-non-transparent);
+    border: 2px solid var(--layer-color-non-transparent);
 }
 
 input[type="file"]::file-selector-button:hover,
 button:hover,
 select:hover {
-    background: #fff3;
+    background: var(--layer-color-hover);
 }
 
 input[type="file"].non-transparent::file-selector-button:hover,
 button.non-transparent:hover,
 select.non-transparent:hover {
-    background: #444;
+    background: var(--layer-color-non-transparent-hover);
 }
 
 input[type="file"]:disabled::file-selector-button,
 button:disabled,
 select:disabled {
-    background: #fff1;
-    color: #666;
+    background: var(--layer-color-disabled);
+    color: var(--text-color-disabled);
     cursor: not-allowed;
 }
 
@@ -71,8 +71,8 @@ select:disabled {
 input[type="file"].non-transparent:disabled::file-selector-button,
 button.non-transparent:disabled,
 select.non-transparent:disabled {
-    background: #222;
-    color: #666;
+    background: var(--layer-color-non-transparent-disabled);
+    color: var(--text-color-disabled);
     cursor: not-allowed;
 }
 
@@ -83,17 +83,17 @@ button {
 }
 
 select > option {
-    background: #141414;
-    color: #eee;
+    background: var(--background-color);
+    color: var(--text-color);
 }
 
 input[type="text"] {
     background-color: unset;
-    border: 2px solid #fff2;
+    border: 2px solid var(--layer-color);
 }
 
 input[type="text"]:focus {
-    border: 2px solid #fff3;
+    border: 2px solid var(--layer-color-hover);
 }
 
 .invis-button {
@@ -111,17 +111,17 @@ input[type="text"]:focus {
 }
 
 ::-webkit-scrollbar-track {
-    background-color: #141414;
+    background-color: var(--background-color);
     border-radius: 5px;
 }
 
 ::-webkit-scrollbar-thumb {
-    background-color: #fff2;
+    background-color: var(--layer-color);
     border-radius: 5px;
 }
 
 ::-webkit-scrollbar-thumb:hover {
-    background-color: #fff3;
+    background-color: var(--layer-color-hover);
 }
 
 ::-webkit-scrollbar {
diff --git a/src/components/App.js b/src/components/App.js
index 1f367e9..7bfb534 100644
--- a/src/components/App.js
+++ b/src/components/App.js
@@ -1,7 +1,6 @@
 import { useState } from 'react';
 import Map from './map/Map';
 import Toolbar from './toolbar/Toolbar';
-import './App.css';
 import SideMenu from './sidemenu/SideMenu';
 import SettingsManager from './SettingsManager';
 import LocList from './loclist/LocList';
@@ -11,6 +10,8 @@ import {GradientsManager} from "./GradientsManager";
 import SideMenuContext from '../contexts/SideMenuContext';
 import SceneryManager from './SceneryManager';
 import ThemeManager from './ThemeManager';
+import './Themes.css';
+import './App.css';
 
 function App() {
     const [sideMenuOpen, setSideMenuOpen] = useState(false);
diff --git a/src/components/Themes.css b/src/components/Themes.css
new file mode 100644
index 0000000..93c587b
--- /dev/null
+++ b/src/components/Themes.css
@@ -0,0 +1,49 @@
+:root {
+    --background-color: #141414;
+    --text-color: #eee;
+    --layer-color: #fff2;
+    --layer-color-hover: #fff3;
+    --layer-color-disabled: #fff1;
+    --layer-color-non-transparent: #222;
+    --layer-color-non-transparent-hover: #444;
+    --layer-color-non-transparent-disabled: #222;
+    --text-color-disabled: #666;
+    --border-color: #444;
+    --text-color-inverted: #141414;
+    --icon-color: #aaa;
+    --icon-color-active: #fff;
+    --map-background-color: #111;
+    --map-shadow-color: #000;
+    --map-icon-color: #eee;
+    --map-text-color: #eee;
+    --map-platform-color: #444;
+    --dialog-background-color: #222;
+    --parser-log-background-color: #0004;
+    --parser-log-warn-color: #aa4;
+    --parser-log-error-color: #f44;
+}
+
+.light-mode {
+    --background-color: #eee;
+    --text-color: #222;
+    --layer-color: #0002;
+    --layer-color-hover: #0003;
+    --layer-color-disabled: #0001;
+    --layer-color-non-transparent: #ddd;
+    --layer-color-non-transparent-hover: #eee;
+    --layer-color-non-transparent-disabled: #888;
+    --text-color-disabled: #666;
+    --border-color: #aaa;
+    --text-color-inverted: #eee;
+    --icon-color: #222;
+    --icon-color-active: #888;
+    --map-background-color: #fff;
+    --map-shadow-color: #0008;
+    --map-icon-color: #444;
+    --map-text-color: #444;
+    --map-platform-color: #ccc;
+    --dialog-background-color: #ddd;
+    --parser-log-background-color: #fff4;
+    --parser-log-warn-color: #774;
+    --parser-log-error-color: #f44;
+}
diff --git a/src/components/dialog/Dialog.css b/src/components/dialog/Dialog.css
index 5234a06..1533da2 100644
--- a/src/components/dialog/Dialog.css
+++ b/src/components/dialog/Dialog.css
@@ -13,8 +13,8 @@
 
 .dialog {
     display: block;
-    background-color: #222;
-    border: 2px solid #444;
+    background-color: var(--dialog-background-color);
+    border: 2px solid var(--border-color);
     border-radius: 8px;
     margin: 0 auto;
     padding: 1em;
@@ -34,7 +34,7 @@
 
 .dialog-title {
     margin-bottom: 2em;
-    color: #888;
+    color: var(--text-color-disabled);
     font-weight: bold;
 }
 
diff --git a/src/components/map/Map.css b/src/components/map/Map.css
index eb0c914..1e94315 100644
--- a/src/components/map/Map.css
+++ b/src/components/map/Map.css
@@ -3,7 +3,7 @@
     display: flex;
     flex-wrap: wrap;
     flex-direction: column;
-    background-color: #111;
+    background-color: var(--map-background-color);
 }
 
 .map svg path.track {
@@ -19,9 +19,9 @@
 
 .map text {
     font-size: 2px;
-    fill: #eee;
+    fill: var(--map-text-color);
     stroke: none;
-    text-shadow: 0 0 16px #000;
+    text-shadow: 0 0 16px var(--map-shadow-color);
 }
 
 .map .switch-name-text {
@@ -46,11 +46,11 @@
 }
 
 .map g.track-object circle {
-    fill: #eee;
+    fill: var(--map-icon-color);
 }
 
 .map g.track-object text {
-    fill: #eee;
+    fill: var(--map-text-color);
     display: none;
 }
 
@@ -59,7 +59,7 @@
 }
 
 .map g.platform rect {
-    fill: #444;
+    fill: var(--map-platform-color);
 }
 
 .map g.map-icon-stroked path,
@@ -67,25 +67,25 @@
 .map g.map-icon-stroked line,
 .map g.map-icon-stroked rect {
     fill: none;
-    stroke: #eee;
+    stroke: var(--map-icon-color);
 }
 
 .map g.map-icon path,
 .map g.map-icon circle,
 .map g.map-icon line,
 .map g.map-icon rect {
-    fill: #eee;
+    fill: var(--map-icon-color);
     stroke: none;
 }
 
 .map g.map-icon-stroked .background,
 .map g.map-icon .background {
-    fill: #111;
+    fill: var(--map-background-color);
     stroke: none;
 }
 
 .map g.map-icon-stroked .with-background,
 .map g.map-icon .with-background {
-    fill: #111;
-    stroke: #eee;
+    fill: var(--map-background-color);
+    stroke: var(--map-icon-color);
 }
diff --git a/src/components/map/track-hover-info/TrackHoverInfo.css b/src/components/map/track-hover-info/TrackHoverInfo.css
index a2caf03..9b9c979 100644
--- a/src/components/map/track-hover-info/TrackHoverInfo.css
+++ b/src/components/map/track-hover-info/TrackHoverInfo.css
@@ -6,8 +6,8 @@
 }
 
 .track-hover-info-popup {
-    background-color: #222;
-    border: 2px solid #444;
+    background-color: var(--layer-color-non-transparent);
+    border: 2px solid var(--border-color);
     border-radius: 8px;
     padding: 1em;
 }
@@ -24,13 +24,13 @@
 .track-hover-info-popup th {
     text-align: start;
     padding-right: 2em;
-    color: #888;
+    color: var(--text-color-disabled);
 }
 
 .track-hover-info-popup__align {
     margin-top: 1.5em;
     padding: 2px;
-    color: #888;
+    color: var(--text-color-disabled);
 }
 
 .track-hover-info-popup .track-hover-info-popup-label {
diff --git a/src/components/scenery-info-dialog/SceneryInfoDialog.css b/src/components/scenery-info-dialog/SceneryInfoDialog.css
index 0a2ccc0..0f6ca7e 100644
--- a/src/components/scenery-info-dialog/SceneryInfoDialog.css
+++ b/src/components/scenery-info-dialog/SceneryInfoDialog.css
@@ -1,12 +1,12 @@
 .scenery-info-view td.label {
     font-weight: bold;
-    color: #aaa;
+    color: var(--text-disabled-color);
     vertical-align: baseline;
     padding-right: 1em;
 }
 
 .scenery-info-view td.value a {
-    color: #eee;
+    color: var(--text-color);
     text-decoration: none;
 }
 
diff --git a/src/components/scenery-loaded-dialog/SceneryParserLogView.css b/src/components/scenery-loaded-dialog/SceneryParserLogView.css
index baef0ae..52db454 100644
--- a/src/components/scenery-loaded-dialog/SceneryParserLogView.css
+++ b/src/components/scenery-loaded-dialog/SceneryParserLogView.css
@@ -1,8 +1,8 @@
 .scenery-parser-log-view {
     padding: 1em;
     border-radius: 8px;
-    border: 2px solid #444;
-    background-color: #0004;
+    border: 2px solid var(--border-color);
+    background-color: var(--parser-log-background-color);
 }
 
 .scenery-parser-log-view ul {
@@ -14,9 +14,9 @@
 }
 
 .scenery-parser-log-view .log-entry.warn {
-    color: #aa4;
+    color: var(--parser-log-warn-color);
 }
 
 .scenery-parser-log-view .log-entry.error {
-    color: #f44;
+    color: var(--parser-log-error-color);
 }
\ No newline at end of file
diff --git a/src/components/sidemenu/SideMenu.css b/src/components/sidemenu/SideMenu.css
index 831072a..feac37b 100644
--- a/src/components/sidemenu/SideMenu.css
+++ b/src/components/sidemenu/SideMenu.css
@@ -3,13 +3,13 @@
 }
 
 .side-menu {
-    border-left: 2px solid #444;
+    border-left: 2px solid var(--border-color);
     padding: 1em;
     position: absolute;
     right: 0;
     top: 0;
     bottom: 0;
-    background-color: #141414;
+    background-color: var(--background-color);
     z-index: 2000;
     width: max-content;
     transition: transform 0.2s ease-in-out;
@@ -71,7 +71,7 @@
 }
 
 .info-footer {
-    color: #888;
+    color: var(--text-color-disabled);
     display: flex;
     flex-direction: column;
     flex-wrap: nowrap;
diff --git a/src/components/sidemenu/track-color-mode/TrackColorMode.css b/src/components/sidemenu/track-color-mode/TrackColorMode.css
index 7c97a27..9fedbe2 100644
--- a/src/components/sidemenu/track-color-mode/TrackColorMode.css
+++ b/src/components/sidemenu/track-color-mode/TrackColorMode.css
@@ -28,7 +28,7 @@
     flex-direction: column;
     gap: 1em;
     padding: 1em;
-    background-color: #fff1;
+    background-color: var(--layer-color);
     border-radius: 8px;
 }
 
diff --git a/src/components/toolbar/Toolbar.css b/src/components/toolbar/Toolbar.css
index debf6c7..3442268 100644
--- a/src/components/toolbar/Toolbar.css
+++ b/src/components/toolbar/Toolbar.css
@@ -5,7 +5,7 @@
     align-items: center;
     gap: 10px;
     padding: 10px;
-    border-bottom: 2px solid #444;
+    border-bottom: 2px solid var(--border-color);
 }
 
 .toolbar-spacer {
@@ -29,7 +29,7 @@
 .loading-indicator {
     height: fit-content;
     padding: 4px 8px;
-    color: #141414;
+    color: var(--text-color-inverted);
     text-align: center;
     opacity: 0;
     transition: opacity 1s ease-in-out;
@@ -48,6 +48,7 @@
     animation: fadeOut 1s ease-in-out 2s forwards; /* Start fading out after 2 seconds */
 }
 
+.theme-toggle svg,
 .side-menu-toggle svg {
     display: block;
     height: 2rem;
@@ -56,10 +57,10 @@
 
 .theme-toggle g,
 .side-menu-toggle g {
-    stroke: #aaa;
+    stroke: var(--icon-color);
 }
 
 .theme-toggle:hover g,
 .side-menu-toggle:hover g {
-    stroke: #fff;
+    stroke: var(--icon-color-active);
 }