Fix theme page not working

app/javascript/legacy/settings.coffee

@@ -104,7 +104,8 @@ if window.URL? or window.webkitURL?
 
 previewStyle = null
 
-$(document).ready ->
+$(document).on 'ready turbolinks:load', ->
+  if $('#update_theme').length > 0
     previewStyle = document.createElement 'style'
     document.body.appendChild previewStyle
 
@@ -112,7 +113,7 @@ $(document).ready ->
 
     $('#update_theme .color').each ->
       $this = $ this
-    this.value = '#' + getHexColorFromThemeValue(this.value)
+      this.value = '#' + getHexColorFromThemeValue(this.dataset.default)
 
       $this.minicolors
         control:      'hue'
@@ -124,7 +125,6 @@ $(document).ready ->
         change:       ->
           clearTimeout previewTimeout
           previewTimeout = setTimeout(previewTheme, 1000)
-  true
 
 $(document).on 'click', 'a.theme_preset', (event) ->
   preset = [].concat themePresets[this.dataset.preset]

app/javascript/packs/legacy.coffee

@@ -8,6 +8,7 @@ import 'bootstrap'
 import 'jquery.guillotine'
 import 'particleground/jquery.particleground.min'
 import 'jquery.growl'
+import 'jquery-minicolors'
 import 'sweetalert'
 import Cookies from 'js-cookie'
 import moment from 'moment'
@@ -16,6 +17,7 @@ require('nprogress/nprogress.css')
 require('jquery.growl/stylesheets/jquery.growl.css')
 require('jquery.guillotine/css/jquery.guillotine.css')
 require('sweetalert/dist/sweetalert.css')
+require('jquery-minicolors/jquery.minicolors.css')
 
 # this file is generated by Rails
 import I18n from '../legacy/i18n'