diff --git a/htdocs/categories/class/categorie.class.php b/htdocs/categories/class/categorie.class.php
index a35fc566ea1..50a1a8d0e06 100644
--- a/htdocs/categories/class/categorie.class.php
+++ b/htdocs/categories/class/categorie.class.php
@@ -229,7 +229,7 @@ class Categorie extends CommonObject
 		$error=0;
 
 		dol_syslog(get_class($this).'::create', LOG_DEBUG);
-		
+
 		// Clean parameters
 		$this->label = trim($this->label);
 		$this->description = trim($this->description);
@@ -405,7 +405,7 @@ class Categorie extends CommonObject
             // End call triggers
 
 			$this->db->commit();
-			
+
 			return 1;
 		}
 		else
@@ -571,12 +571,12 @@ class Categorie extends CommonObject
 		if ($this->id == -1) return -2;
 
 		// For backward compatibility
-		if ($type == 'societe') 
+		if ($type == 'societe')
 		{
 			$type = 'customer';
 			dol_syslog(get_class($this) . "::add_type(): type 'societe' is deprecated, please use 'customer' instead",	LOG_WARNING);
 		}
-		elseif ($type == 'fournisseur') 
+		elseif ($type == 'fournisseur')
 		{
 			$type = 'supplier';
 			dol_syslog(get_class($this) . "::add_type(): type 'fournisseur' is deprecated, please use 'supplier' instead", LOG_WARNING);
@@ -1353,16 +1353,17 @@ class Categorie extends CommonObject
 	 *	@param		int		$withpicto		0=No picto, 1=Include picto into link, 2=Only picto
 	 *	@param		string	$option			Sur quoi pointe le lien ('', 'xyz')
 	 * 	@param		int		$maxlength		Max length of text
+	 *  @param		string	$forced_color	Hexadecimal code to force link color
 	 *	@return		string					Chaine avec URL
 	 */
-	function getNomUrl($withpicto=0,$option='',$maxlength=0)
+	function getNomUrl($withpicto=0,$option='',$maxlength=0, $forced_color='')
 	{
 		global $langs;
 
 		$result='';
 		$label=$langs->trans("ShowCategory").': '. ($this->ref?$this->ref:$this->label);
 
-        $link = '<a href="'.DOL_URL_ROOT.'/categories/viewcat.php?id='.$this->id.'&type='.$this->type.'" title="'.dol_escape_htmltag($label, 1).'" class="classfortooltip">';
+        $link = '<a href="'.DOL_URL_ROOT.'/categories/viewcat.php?id='.$this->id.'&type='.$this->type.'" title="'.dol_escape_htmltag($label, 1).'" class="classfortooltip"' . ( $forced_color ? ' style="color: #'.$forced_color.'"' : '' ) .'>';
 		$linkend='</a>';
 
 		$picto='category';
diff --git a/htdocs/categories/index.php b/htdocs/categories/index.php
index e57cd22d5fd..a01ea17e969 100644
--- a/htdocs/categories/index.php
+++ b/htdocs/categories/index.php
@@ -148,7 +148,13 @@ foreach($fulltree as $key => $val)
 	$categstatic->ref=$val['label'];
 	$categstatic->color=$val['color'];
 	$categstatic->type=$type;
-	$li=$categstatic->getNomUrl(1,'',60);
+	// Check contrast with background and correct text color
+	$color = colorArrayToHex(colorStringToArray($categstatic->color,array()),'');
+	$textcolor='000';
+	$tmpcolorweight=0;
+	foreach(colorStringToArray($color,array()) as $x) $tmpcolorweight+=$x;
+	if ($tmpcolorweight < 400) $textcolor='FFF';
+	$li=$categstatic->getNomUrl(1,'',60, $textcolor);
 	$desc=dol_htmlcleanlastbr($val['description']);
 
 	$data[] = array(
diff --git a/htdocs/theme/eldy/style.css.php b/htdocs/theme/eldy/style.css.php
index 14154d01f51..a756e1f941c 100644
--- a/htdocs/theme/eldy/style.css.php
+++ b/htdocs/theme/eldy/style.css.php
@@ -653,7 +653,7 @@ div.arearef {
 	margin-bottom: 10px;
 }
 div.heightref {
-	min-height: 80px; 
+	min-height: 80px;
 }
 div.divphotoref {
 	padding-right: 20px;
@@ -1177,8 +1177,8 @@ div.vmenu, td.vmenu {
 	width: 188px;
 }
 
-.menu_contenu { 
-	padding-top: 5px; 
+.menu_contenu {
+	padding-top: 5px;
 	padding-bottom: 2px;
 }
 #menu_contenu_logo { padding-right: 4px; }
@@ -1247,7 +1247,7 @@ div.blockvmenupair, div.blockvmenuimpair, div.blockvmenubookmarks, div.blockvmen
     -moz-box-shadow: 3px 3px 4px #DDD;
     -webkit-box-shadow: 3px 3px 4px #DDD;
     box-shadow: 3px 3px 4px #DDD;
-  */  
+  */
 }
 
 div.blockvmenusearch
@@ -2078,7 +2078,7 @@ table.liste, table.noborder, table.formdoc, div.noborder {
 	border-bottom-width: 1px;
 	border-bottom-color: #BBB;
 	border-bottom-style: solid;
-	
+
 	margin: 0px 0px 5px 0px;
 
 	-moz-box-shadow: 2px 2px 4px #CCC;
@@ -3661,10 +3661,10 @@ a span.select2-chosen
 	box-shadow: none;
 	-webkit-box-shadow: none !important;
     box-shadow: none !important;
-    color: #fff !important;
+    color: #fff;
 }
 span.noborderoncategories a, li.noborderoncategories a {
-	color: #fff !important;
+	color: #fff;
 	line-height: normal;
 	vertical-align: top;
 }
@@ -3772,10 +3772,10 @@ a.ui-link, a.ui-link:hover, .ui-btn:hover, span.ui-btn-text:hover, span.ui-btn-i
 }
 select {
     /* display: inline-block; */	/* We can't set this. This disable ability to make */
-    /* TODO added by jmobile, replace jmobile with pure css*/ 
+    /* TODO added by jmobile, replace jmobile with pure css*/
     overflow:hidden;
     white-space: nowrap;
-    text-overflow: ellipsis; 
+    text-overflow: ellipsis;
 }
 .fiche .ui-controlgroup {
 	margin: 0px;
@@ -3953,11 +3953,11 @@ border-top-right-radius: 6px;
 @media only screen and (max-width: 767px)
 {
 	.imgopensurveywizard { width:95%; height: auto; }
-	
+
 	#tooltip {
 		position: absolute;
 		width: <?php print dol_size(350,'width'); ?>px;
-	}	
+	}
 
 }
 
@@ -3997,14 +3997,14 @@ border-top-right-radius: 6px;
 		top: 4px;
 		max-width: 82px;
 	}
-	
+
 	div.mainmenu {
     	min-width: 20px;
     }
 	.topmenuimage {
     	background-size: 20px auto;
     }
-    
+
 	#tooltip {
 		position: absolute;
 		width: <?php print dol_size(300,'width'); ?>px;