diff --git a/src/demo/css/style.css b/src/demo/css/style.css
index 5d563dae..3b3a5446 100644
--- a/src/demo/css/style.css
+++ b/src/demo/css/style.css
@@ -207,6 +207,12 @@ input:focus:invalid {
   margin-top: 8px;
 }
 
+.radio-button-group {
+  display: flex;
+  align-items: center;
+  gap: 0.75em;
+}
+
 .advanced .color-properties {
   grid-template-columns: auto 1fr auto;
 }
diff --git a/src/demo/index.php b/src/demo/index.php
index db8b666c..bd3580ce 100644
--- a/src/demo/index.php
+++ b/src/demo/index.php
@@ -146,14 +146,30 @@ function gtag() {
 
                 <details class="advanced">
                     <summary>⚙ Advanced Options</summary>
-                    <div class="content color-properties parameters">
-                        <label for="theme">Add Property</label>
-                        <select id="properties" name="properties">
-                            <?php foreach ($THEMES["default"] as $option => $color): ?>
-                                <option><?php echo $option; ?></option>
-                            <?php endforeach; ?>
-                        </select>
-                        <button class="plus btn" type="button" onclick="preview.addProperty()">+</button>
+                    <div class="content">
+                        <div class="radio-buttons parameters">
+                            <!-- Radio buttons to choose between solid and gradient background -->
+                            <label for="background-type">Background Type</label>
+                            <div class="radio-button-group">
+                                <div>
+                                    <input type="radio" id="background-type-solid" name="background-type" value="solid" checked>
+                                    <label for="solid">Solid Color</label>
+                                </div>
+                                <div>
+                                    <input type="radio" id="background-type-gradient" name="background-type" value="gradient">
+                                    <label for="gradient">Gradient</label>
+                                </div>
+                            </div>
+                        </div>
+                        <div class="color-properties parameters">
+                            <label for="theme">Add Property</label>
+                            <select id="properties" name="properties">
+                                <?php foreach ($THEMES["default"] as $option => $color): ?>
+                                    <option><?php echo $option; ?></option>
+                                <?php endforeach; ?>
+                            </select>
+                            <button class="plus btn" type="button" onclick="preview.addProperty()">+</button>
+                        </div>
                     </div>
                     <button class="btn" type="button" onclick="preview.exportPhp()">Export to PHP</button>
                     <button id="clear-button" class="btn" type="button" onclick="preview.removeAllProperties()" disabled>Clear Options</button>
diff --git a/src/demo/js/script.js b/src/demo/js/script.js
index 752eb579..1141c0c1 100644
--- a/src/demo/js/script.js
+++ b/src/demo/js/script.js
@@ -85,7 +85,7 @@ const preview = {
       };
 
       const parent = document.querySelector(".advanced .color-properties");
-      if (propertyName === "background") {
+      if (propertyName === "background" && document.querySelector("#background-type-gradient").checked) {
         const valueParts = value.split(",");
         let angleValue = "45";
         let color1Value = "#EB5454FF";
@@ -335,8 +335,26 @@ window.addEventListener(
     [...document.querySelectorAll("select:not(#properties)")].forEach((element) => {
       element.addEventListener("change", refresh, false);
     });
+    // when the background-type changes, remove the background and replace it
+    const toggleBackgroundType = () => {
+      const value = document.querySelector("input#background, input#background-color1")?.value;
+      preview.removeProperty("background");
+      if (value && document.querySelector("#background-type-gradient").checked) {
+        preview.addProperty("background", `45,${value},${value}`);
+      } else if (value) {
+        preview.addProperty("background", value);
+      }
+    };
+    document.querySelector("#background-type-solid").addEventListener("change", toggleBackgroundType, false);
+    document.querySelector("#background-type-gradient").addEventListener("change", toggleBackgroundType, false);
     // set input boxes to match URL parameters
     const searchParams = new URLSearchParams(window.location.search);
+    const backgroundParams = searchParams.getAll("background");
+    // set background-type
+    if (backgroundParams.length > 1) {
+      document.querySelector("#background-type-gradient").checked = true;
+    }
+    // set input field and select values
     searchParams.forEach((val, key) => {
       const paramInput = document.querySelector(`[name="${key}"]`);
       if (paramInput) {
@@ -348,9 +366,8 @@ window.addEventListener(
         preview.addProperty(key, searchParams.getAll(key).join(","));
       }
     });
-    // set background angle and colors
-    const backgroundParams = searchParams.getAll("background");
-    if (backgroundParams.length > 0) {
+    // set background angle and gradient colors
+    if (backgroundParams.length > 1) {
       document.querySelector("#rotate").value = backgroundParams[0];
       document.querySelector("#background-color1").value = backgroundParams[1];
       document.querySelector("#background-color2").value = backgroundParams[2];