diff --git a/htdocs/core/class/dolgraph.class.php b/htdocs/core/class/dolgraph.class.php
index 458f0bd4fad..5c45eb5836d 100644
--- a/htdocs/core/class/dolgraph.class.php
+++ b/htdocs/core/class/dolgraph.class.php
@@ -1094,7 +1094,7 @@ class DolGraph
 				$i++;
 			}
 			// shadowSize: 0 -> Drawing is faster without shadows
-			$this->stringtoshow.="\n".' ], { series: { shadowSize: 0, stack: stack, lines: { fill: false, steps: steps }, bars: { barWidth: 0.6 } }'."\n";
+			$this->stringtoshow.="\n".' ], { series: { shadowSize: 0, stack: stack, lines: { fill: false, steps: steps }, bars: { barWidth: 0.6,  fillColor: { colors: [{opacity: 0.9 }, {opacity: 0.85}] }} }'."\n";
 
 			// Xaxis
 			$this->stringtoshow.=', xaxis: { ticks: ['."\n";
diff --git a/htdocs/core/lib/usergroups.lib.php b/htdocs/core/lib/usergroups.lib.php
index 7da112fa255..ea7f9856509 100644
--- a/htdocs/core/lib/usergroups.lib.php
+++ b/htdocs/core/lib/usergroups.lib.php
@@ -947,5 +947,44 @@ function show_theme($fuser, $edit = 0, $foruserprofile = false)
 	    */
 	}
 
+
+	// Use MAIN_OPTIMIZEFORTEXTBROWSER
+	if ($foruserprofile)
+	{
+		//$default=yn($conf->global->MAIN_OPTIMIZEFORCOLORBLIND);
+		$default=$langs->trans('No');
+		print '<tr class="oddeven">';
+		print '<td>'.$langs->trans("MAIN_OPTIMIZEFORCOLORBLIND").'</td>';
+		print '<td colspan="'.($colspan-1).'">';
+
+		$colorBlindOptions = array(
+			0 => $langs->trans('No'),
+			'protanopia' => $langs->trans('Protanopia'),
+			'deuteranopes' => $langs->trans('Deuteranopes'),
+			'tritanopes' => $langs->trans('Tritanopes'),
+		);
+
+		if ($edit)
+		{
+			print $form->selectArray('MAIN_OPTIMIZEFORCOLORBLIND', $colorBlindOptions, $fuser->conf->MAIN_OPTIMIZEFORCOLORBLIND, 0);
+		}
+		else
+		{
+			if (!empty($fuser->conf->MAIN_OPTIMIZEFORCOLORBLIND) && isset($colorBlindOptions[$fuser->conf->MAIN_OPTIMIZEFORCOLORBLIND])){
+				print $colorBlindOptions[$fuser->conf->MAIN_OPTIMIZEFORCOLORBLIND];
+			}
+			else{
+				print yn(0);
+			}
+		}
+		print ' &nbsp; ('.$langs->trans("Default").': <strong>'.$default.'</strong>) ';
+		print $form->textwithpicto('', $langs->trans("MAIN_OPTIMIZEFORCOLORBLINDDesc"));
+		print '</td>';
+		print '</tr>';
+	}
+	else
+	{
+
+	}
 	print '</table>';
 }
diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index 0f22d42327c..48d4d898de6 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -1900,6 +1900,11 @@ OnMobileOnly=On small screen (smartphone) only
 DisableProspectCustomerType=Disable the "Prospect + Customer" third party type (so third party must be Prospect or Customer but can't be both)
 MAIN_OPTIMIZEFORTEXTBROWSER=Simplify interface for blind person
 MAIN_OPTIMIZEFORTEXTBROWSERDesc=Enable this option if you are a blind person, or if you use the application from a text browser like Lynx or Links.
+MAIN_OPTIMIZEFORCOLORBLIND=Change  interface's color for color blind person
+MAIN_OPTIMIZEFORCOLORBLINDDesc=Enable this option if you are a color blind person, in some case interface will change color setup to increase contrast.
+Protanopia=Protanopia
+Deuteranopes=Deuteranopes
+Tritanopes=Tritanopes
 ThisValueCanOverwrittenOnUserLevel=This value can be overwritten by each user from its user page - tab '%s'
 DefaultCustomerType=Default thirdparty type for "New customer" creation form
 ABankAccountMustBeDefinedOnPaymentModeSetup=Note: The bank account must be defined on the module of each payment mode (Paypal, Stripe, ...) to have this feature working.
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 7b983ca05eb..e1a1f333d1d 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -902,6 +902,9 @@ elseif (! empty($user->conf->MAIN_OPTIMIZEFORTEXTBROWSER))
 	$conf->global->MAIN_OPTIMIZEFORTEXTBROWSER=$user->conf->MAIN_OPTIMIZEFORTEXTBROWSER;
 }
 
+// set MAIN_OPTIMIZEFORCOLORBLIND
+$conf->global->MAIN_OPTIMIZEFORCOLORBLIND=$user->conf->MAIN_OPTIMIZEFORCOLORBLIND;
+
 // Set terminal output option according to conf->browser.
 if (GETPOST('dol_hide_leftmenu', 'int') || ! empty($_SESSION['dol_hide_leftmenu']))               $conf->dol_hide_leftmenu=1;
 if (GETPOST('dol_hide_topmenu', 'int') || ! empty($_SESSION['dol_hide_topmenu']))                 $conf->dol_hide_topmenu=1;
@@ -1087,6 +1090,10 @@ if (! function_exists("llxHeader"))
 		    if ($mainmenu != 'website') $tmpcsstouse=$morecssonbody;  // We do not use sidebar-collpase by default to have menuhider open by default.
 		}
 
+		if(!empty($conf->global->MAIN_OPTIMIZEFORCOLORBLIND)){
+			$tmpcsstouse.= ' colorblind-'.strip_tags($conf->global->MAIN_OPTIMIZEFORCOLORBLIND);
+		}
+
 		print '<body id="mainbody" class="'.$tmpcsstouse.'">' . "\n";
 
 		// top menu and left menu area
diff --git a/htdocs/theme/eldy/badges.inc.php b/htdocs/theme/eldy/badges.inc.php
index 984315b0bde..0f635941a8e 100644
--- a/htdocs/theme/eldy/badges.inc.php
+++ b/htdocs/theme/eldy/badges.inc.php
@@ -115,6 +115,17 @@ a.badge-warning:focus, a.badge-warning:hover {
     background-color: <?php print colorDarker($badgeWarning, 10); ?>;
 }
 
+/* WARNING colorblind */
+body[class^="colorblind-"] .badge-warning {
+	  background-color: <?php print $colorblind_deuteranopes_badgeWarning; ?>;
+  }
+body[class^="colorblind-"] a.badge-warning.focus,body[class^="colorblind-"] a.badge-warning:focus {
+	box-shadow: 0 0 0 0.2rem <?php print colorHexToRgb($colorblind_deuteranopes_badgeWarning, 0.5); ?>;
+}
+body[class^="colorblind-"] a.badge-warning:focus, a.badge-warning:hover {
+	background-color: <?php print colorDarker($colorblind_deuteranopes_badgeWarning, 10); ?>;
+}
+
 /* INFO */
 .badge-info {
     color: #fff !important;
@@ -160,44 +171,66 @@ a.badge-dark:focus, a.badge-dark:hover {
 /*
 * STATUS BADGES
 */
-
-/* Default Status */
-
 <?php for ($i = 0; $i <= 9; $i++){
+	/* Default Status */
+	_createStatusBadgeCss($i, '', "STATUS".$i);
 
-    print "\n/* STATUS".$i." */\n";
-
-    $thisBadgeBackgroundColor = $thisBadgeBorderColor = ${'badgeStatus'.$i};
-
-
-    $TBadgeBorderOnly = array(0,3,5,7);
-    $thisBadgeTextColor = colorIsLight(${'badgeStatus'.$i})?'#212529':'#ffffff';
-    if(in_array($i, $TBadgeBorderOnly)){
-        $thisBadgeTextColor = '#212529';
-        $thisBadgeBackgroundColor = "#fff";
-    }
-
-    print ".badge-status".$i." {\n";
-    print "        color: ".$thisBadgeTextColor." !important;\n";
-
-    if(in_array($i, $TBadgeBorderOnly)){
-        print "        border-color: ".$thisBadgeBorderColor.";\n";
-    }
-
-    print "        background-color: ".$thisBadgeBackgroundColor.";\n";
-    print "}\n";
-
-    print ".badge-status".$i.".focus, .badge-status".$i.":focus {\n";
-    print "    outline: 0;\n";
-    print "    box-shadow: 0 0 0 0.2rem ".colorHexToRgb($thisBadgeBackgroundColor, 0.5).";\n";
-    print "}\n";
-
-    print ".badge-status".$i.":focus, .badge-status".$i.":hover {\n";
-    print "    color: ".$thisBadgeTextColor." !important;\n";
-    print "    background-color: ".colorDarker($thisBadgeBackgroundColor, 10).";\n";
-    if(in_array($i, $TBadgeBorderOnly)){
-        print "        border-color: ".colorDarker($thisBadgeBorderColor, 10).";\n";
-    }
-    print "}\n";
+	// create status for accessibility
+	_createStatusBadgeCss($i, 'colorblind_deuteranopes_', "COLORBLIND STATUS".$i, 'body[class*="colorblind-"] ');
 }
 
+/**
+ * create status badge
+ * @param string $statusName name of status
+ * @param string $statusVarNamePrefix a prefix for var ${$statusVarNamePrefix.'badgeStatus'.$statusName}
+ * @param string $commentLabel a comment label
+ * @param string $cssPrefix a css prefix
+ * @return void
+ */
+function _createStatusBadgeCss($statusName, $statusVarNamePrefix = '', $commentLabel = '', $cssPrefix = '')
+{
+
+	global ${$statusVarNamePrefix.'badgeStatus'.$statusName}, ${$statusVarNamePrefix.'badgeStatus_textColor'.$statusName};
+
+	if(!empty(${$statusVarNamePrefix.'badgeStatus'.$statusName})) {
+		print "\n/* " . strtoupper($commentLabel) . " */\n";
+		$thisBadgeBackgroundColor = $thisBadgeBorderColor = ${$statusVarNamePrefix . 'badgeStatus' . $statusName};
+
+
+		$TBadgeBorderOnly = array(0, 3, 5, 7);
+		$thisBadgeTextColor = colorIsLight(${$statusVarNamePrefix . 'badgeStatus' . $statusName}) ? '#212529' : '#ffffff';
+
+
+		if (!empty(${$statusVarNamePrefix . 'badgeStatus_textColor' . $statusName})) {
+			$thisBadgeTextColor = ${$statusVarNamePrefix . 'badgeStatus_textColor' . $statusName};
+		}
+
+		if (in_array($statusName, $TBadgeBorderOnly)) {
+			$thisBadgeTextColor = '#212529';
+			$thisBadgeBackgroundColor = "#fff";
+		}
+
+		print $cssPrefix . ".badge-status" . $statusName . " {\n";
+		print "        color: " . $thisBadgeTextColor . " !important;\n";
+
+		if (in_array($statusName, $TBadgeBorderOnly)) {
+			print "        border-color: " . $thisBadgeBorderColor . ";\n";
+		}
+
+		print "        background-color: " . $thisBadgeBackgroundColor . ";\n";
+		print "}\n";
+
+		print $cssPrefix . ".badge-status" . $statusName . ".focus, " . $cssPrefix . ".badge-status" . $statusName . ":focus {\n";
+		print "    outline: 0;\n";
+		print "    box-shadow: 0 0 0 0.2rem " . colorHexToRgb($thisBadgeBackgroundColor, 0.5) . ";\n";
+		print "}\n";
+
+		print $cssPrefix . ".badge-status" . $statusName . ":focus, " . $cssPrefix . ".badge-status" . $statusName . ":hover {\n";
+		print "    color: " . $thisBadgeTextColor . " !important;\n";
+		print "    background-color: " . colorDarker($thisBadgeBackgroundColor, 10) . ";\n";
+		if (in_array($statusName, $TBadgeBorderOnly)) {
+			print "        border-color: " . colorDarker($thisBadgeBorderColor, 10) . ";\n";
+		}
+		print "}\n";
+	}
+}
diff --git a/htdocs/theme/eldy/theme_vars.inc.php b/htdocs/theme/eldy/theme_vars.inc.php
index f02c25113ef..712730678d3 100644
--- a/htdocs/theme/eldy/theme_vars.inc.php
+++ b/htdocs/theme/eldy/theme_vars.inc.php
@@ -32,7 +32,13 @@
 
 global $theme_bordercolor, $theme_datacolor, $theme_bgcolor, $theme_bgcoloronglet;
 $theme_bordercolor = array(235,235,224);
-$theme_datacolor = array(array(136,102,136), array(0,130,110), array(140,140,220), array(190,120,120), array(190,190,100), array(115,125,150), array(100,170,20), array(250,190,30), array(150,135,125), array(85,135,150), array(150,135,80), array(150,80,150));
+$theme_datacolor = array(array(157, 56, 191), array(0, 147, 183), array(250,190,30), array(221, 75, 57), array(0,166,90), array(140,140,220), array(190,120,120), array(190,190,100), array(115,125,150), array(100,170,20), array(150,135,125), array(85,135,150), array(150,135,80), array(150,80,150));
+if(!empty($conf->global->MAIN_OPTIMIZEFORCOLORBLIND)) // user is loaded by dolgraph.class.php
+{
+	// for now we use the same configuration for all types of color blind
+	$theme_datacolor = array(array(248, 220, 1), array(9, 85, 187), array(42, 208, 255), array(0, 0, 0), array(169, 169, 169), array(253, 102, 136), array(120, 154, 190), array(146, 146, 55), array(0, 52, 251), array(196, 226, 161), array(222, 160, 41), array(85,135,150), array(150,135,80), array(150,80,150));
+}
+
 $theme_bgcolor = array(hexdec('F4'),hexdec('F4'),hexdec('F4'));
 $theme_bgcoloronglet = array(hexdec('DE'),hexdec('E7'),hexdec('EC'));
 
@@ -71,6 +77,11 @@ $badgeInfo      ='#17a2b8';
 $badgeDark      ='#343a40';
 $badgeLight     ='#f8f9fa';
 
+// badge color ajustement for color blind
+$colorblind_deuteranopes_badgeSuccess   ='#37de5d';  //! text color black
+$colorblind_deuteranopes_badgeSuccess_textColor7='#000';
+$colorblind_deuteranopes_badgeWarning   ='#e4e411';
+
 /* default color for status : After a quick check, somme status can have oposite function according to objects
 *  So this badges status uses default value according to theme eldy status img
 *  TODO: use color definition vars above for define badges color status X -> expemple $badgeStatusValidate, $badgeStatusClosed, $badgeStatusActive ....
@@ -85,3 +96,9 @@ $badgeStatus6='#cad2d2';
 $badgeStatus7='#baa32b';
 $badgeStatus8='#be3013';
 $badgeStatus9='#e7f0f0';
+
+// status color ajustement for color blind
+$colorblind_deuteranopes_badgeStatus4=$colorblind_deuteranopes_badgeStatus7=$colorblind_deuteranopes_badgeSuccess;  //! text color black
+$colorblind_deuteranopes_badgeStatus_textColor4=$colorblind_deuteranopes_badgeStatus_textColor7='#000';
+$colorblind_deuteranopes_badgeStatus1=$colorblind_deuteranopes_badgeWarning;
+$colorblind_deuteranopes_badgeStatus_textColor1='#000';
diff --git a/htdocs/user/param_ihm.php b/htdocs/user/param_ihm.php
index 90228aa952e..c33c26fa95b 100644
--- a/htdocs/user/param_ihm.php
+++ b/htdocs/user/param_ihm.php
@@ -152,6 +152,12 @@ if (empty($reshook)) {
 			    $tabparam["MAIN_OPTIMIZEFORTEXTBROWSER"] = 0;
 			}
 
+			if (GETPOST('MAIN_OPTIMIZEFORCOLORBLIND')) {
+				$tabparam["MAIN_OPTIMIZEFORCOLORBLIND"] = GETPOST('MAIN_OPTIMIZEFORCOLORBLIND');
+			} else {
+				$tabparam["MAIN_OPTIMIZEFORCOLORBLIND"] = 0;
+			}
+
 			$result = dol_set_user_param($db, $conf, $object, $tabparam);
 
 			header('Location: ' . $_SERVER["PHP_SELF"] . '?id=' . $id);