diff --git a/app/javascript/retrospring/features/settings/theme.ts b/app/javascript/retrospring/features/settings/theme.ts
new file mode 100644
index 00000000..c4cf02ff
--- /dev/null
+++ b/app/javascript/retrospring/features/settings/theme.ts
@@ -0,0 +1,100 @@
+import "@melloware/coloris/dist/coloris.css";
+import Coloris from "@melloware/coloris";
+
+let previewStyle = null;
+let previewTimeout = null;
+
+const previewTheme = (): void => {
+  const payload = {};
+
+  Array.from(document.querySelectorAll('#update_theme .color')).forEach((color: HTMLInputElement) => {
+    const name = color.name.substring(6, color.name.length - 1);
+    payload[name] = parseInt(color.value.substr(1, 6), 16);
+  });
+
+  generateTheme(payload);
+}
+
+const generateTheme = (payload: object): void => {
+  const themeAttributeMap = {
+    'primary_color': 'primary',
+    'primary_text': 'primary-text',
+    'danger_color': 'danger',
+    'danger_text': 'danger-text',
+    'warning_color': 'warning',
+    'warning_text': 'warning-text',
+    'info_color': 'info',
+    'info_text': 'info-text',
+    'success_color': 'success',
+    'success_text': 'success-text',
+    'dark_color': 'dark',
+    'dark_text': 'dark-text',
+    'light_color': 'light',
+    'light_text': 'light-text',
+    'raised_background': 'raised-bg',
+    'raised_accent': 'raised-accent',
+    'background_color': 'background',
+    'body_text': 'body-text',
+    'input_color': 'input-bg',
+    'input_text': 'input-text',
+    'muted_text': 'muted-text'
+  };
+
+  let body = ":root {\n";
+
+  (Object.keys(payload)).forEach((payloadKey) => {
+    if (themeAttributeMap[payloadKey]) {
+      if (themeAttributeMap[payloadKey].includes('text')) {
+        const hex = getHexColorFromThemeValue(payload[payloadKey]);
+        body += `--${themeAttributeMap[payloadKey]}: ${getDecimalTripletsFromHex(hex)};\n`;
+      }
+      else {
+        body += `--${themeAttributeMap[payloadKey]}: #${getHexColorFromThemeValue(payload[payloadKey])};\n`;
+      }
+    }
+  });
+
+  body += "}";
+
+  previewStyle.innerHTML = body;
+}
+
+const getHexColorFromThemeValue = (themeValue: string): string => {
+  return ('000000' + parseInt(themeValue).toString(16)).substr(-6, 6);
+}
+
+const getDecimalTripletsFromHex = (hex: string): string => {
+  return hex.match(/.{1,2}/g).map((value) => parseInt(value, 16)).join(', ');
+}
+
+export function themeDocumentHandler(): void {
+  if (!document.querySelector('#update_theme')) return;
+
+  previewStyle = document.createElement('style');
+  previewStyle.setAttribute('data-preview-style', '');
+  document.body.appendChild(previewStyle);
+
+  Coloris.init();
+
+  Array.from(document.querySelectorAll('#update_theme .color')).forEach((color: HTMLInputElement) => {
+    color.value = `#${getHexColorFromThemeValue(color.value)}`;
+
+    Coloris({
+      el: '.color',
+      wrap: false,
+      formatToggle: false,
+      alpha: false
+    });
+
+    color.addEventListener('input', () => {
+      clearTimeout(previewTimeout);
+      setTimeout(previewTheme, 1000);
+    });
+  });
+}
+
+export function themeSubmitHandler(): void {
+  Array.from(document.querySelectorAll('#update_theme .color')).forEach((color: HTMLInputElement) => {
+    color.value = String(parseInt(color.value.substr(1, 6), 16));
+  });
+}
\ No newline at end of file
diff --git a/app/views/settings/_profile.haml b/app/views/settings/_profile.haml
index ea87af87..984588fa 100644
--- a/app/views/settings/_profile.haml
+++ b/app/views/settings/_profile.haml
@@ -8,16 +8,10 @@
         .media-body
           = f.file_field :profile_picture, label: t('views.settings.profile.avatar'), accept: APP_CONFIG[:accepted_image_formats].join(',')
 
-      .row#profile-picture-crop-controls{ style: 'display: none;' }
+      .row.d-none#profile-picture-crop-controls
         .col-sm-10.col-md-8
           %strong= t('views.settings.profile.avatar_adjust')
           %img#profile-picture-cropper{ src: current_user.profile_picture.url(:medium) }
-        .col-sm-2.col-md-4
-          .btn-group
-            %button.btn.btn-inverse#cropper-zoom-out{ type: :button }
-              %i.fa.fa-search-minus
-            %button.btn.btn-inverse#cropper-zoom-in{ type: :button }
-              %i.fa.fa-search-plus
 
       .row.mb-2#profile-header-media
         .col
@@ -25,16 +19,10 @@
         .col-xs-12.mt-3.mt-sm-0.pl-3.pr-3
           = f.file_field :profile_header, label: t('views.settings.profile.header'), accept: APP_CONFIG[:accepted_image_formats].join(',')
 
-      .row#profile-header-crop-controls{ style: 'display: none;' }
+      .row.d-none#profile-header-crop-controls
         .col-sm-10.col-md-8
           %strong= t('views.settings.profile.header_adjust')
           %img#profile-header-cropper{ src: current_user.profile_header.url(:web) }
-        .col-sm-2.col-md-4
-          .btn-group
-            %button.btn.btn-inverse#cropper-header-zoom-out{ type: :button }
-              %i.fa.fa-search-minus
-            %button.btn.btn-inverse#cropper-header-zoom-in{ type: :button }
-              %i.fa.fa-search-plus
 
       = f.check_box :show_foreign_themes, label: 'Render other user themes when visiting their profile'