diff --git a/README.md b/README.md
index f45d0fb..9942b93 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,9 @@ Some limitation exists with FOP (tested with FOP 2.4): internal link between ima
 - DITA-OT 3.1 and older: run `dita --install https://github.com/Amplexor/com.amplexor.imagemap-pdf/releases/download/v1.0/com.amplexor.imagemap-pdf-v1.1.zip`
 
 ## Parameters
-* **imagemap.hotspot.enabled** set to "yes" to enable imagemap hotspot insertion in the generated PDF.
+- **imagemap.hotspot.enabled**: set to "yes" to enable imagemap hotspot insertion in the generated PDF.
+- **imagemap.hotspot.shape.color**: defines hotspot shape color. The default value is 'blue'.
+- **imagemap.hotspot.text.color**: defines hotspot text color. The default value is 'white'.
 
 
 ## Usage with Antenna House
diff --git a/imagemap/ut-domain-attr.xsl b/imagemap/ut-domain-attr.xsl
index 149a9a9..4d5728b 100644
--- a/imagemap/ut-domain-attr.xsl
+++ b/imagemap/ut-domain-attr.xsl
@@ -3,9 +3,9 @@
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   xmlns:xs="http://www.w3.org/2001/XMLSchema"
   version="2.0">
-
-    <xsl:variable name="defaultSvgShapeStrokeColor" select="'blue'" as="xs:string"/>
-    <xsl:variable name="defaultSvgHotspotTextColor" select="'white'" as="xs:string"/>
+  
+    <xsl:param name="imagemap.hotspot.shape.color" select="'blue'" as="xs:string"/>
+    <xsl:param name="imagemap.hotspot.text.color" select="'white'" as="xs:string"/>
 
     <xsl:attribute-set name="svg_shape_container">
         <xsl:attribute name="absolute-position">absolute</xsl:attribute>
@@ -16,7 +16,7 @@
     </xsl:attribute-set>
     
     <xsl:attribute-set name="svg_shape">
-        <xsl:attribute name="stroke"><xsl:value-of select="$defaultSvgShapeStrokeColor"/></xsl:attribute>
+        <xsl:attribute name="stroke"><xsl:value-of select="$imagemap.hotspot.shape.color"/></xsl:attribute>
         <xsl:attribute name="stroke-width">1</xsl:attribute>
         <xsl:attribute name="fill-opacity">0</xsl:attribute>
         <xsl:attribute name="stroke-opacity">1</xsl:attribute>    
@@ -29,15 +29,15 @@
     <xsl:attribute-set name="svg_shape_circle" use-attribute-sets="svg_shape"/>
     
     <xsl:attribute-set name="svg_hotspot_circle">
-        <xsl:attribute name="stroke"><xsl:value-of select="$defaultSvgShapeStrokeColor"/></xsl:attribute>
-        <xsl:attribute name="fill"><xsl:value-of select="$defaultSvgShapeStrokeColor"/></xsl:attribute>
+        <xsl:attribute name="stroke"><xsl:value-of select="$imagemap.hotspot.shape.color"/></xsl:attribute>
+        <xsl:attribute name="fill"><xsl:value-of select="$imagemap.hotspot.shape.color"/></xsl:attribute>
         <xsl:attribute name="stroke-width">1</xsl:attribute>
         <xsl:attribute name="fill-opacity">1</xsl:attribute>
         <xsl:attribute name="stroke-opacity">1</xsl:attribute>
     </xsl:attribute-set>
     
     <xsl:attribute-set name="svg_hotspot_circle_content">
-        <xsl:attribute name="fill"><xsl:value-of select="$defaultSvgHotspotTextColor"/></xsl:attribute>
+        <xsl:attribute name="fill"><xsl:value-of select="$imagemap.hotspot.text.color"/></xsl:attribute>
         <xsl:attribute name="font-size">0.4em</xsl:attribute>
         <xsl:attribute name="font-weight">bold</xsl:attribute>
         <xsl:attribute name="font-family">sans-serif</xsl:attribute>
diff --git a/params.xml b/params.xml
index bfb3240..4a6d89f 100644
--- a/params.xml
+++ b/params.xml
@@ -1,5 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <extension>
   <param name="imagemap.hotspot.enabled" expression="${imagemap.hotspot.enabled}" if:set="imagemap.hotspot.enabled" xmlns:if="ant:if"/>
+  <param name="imagemap.hotspot.shape.color" expression="${imagemap.hotspot.shape.color}" if:set="imagemap.hotspot.shape.color" xmlns:if="ant:if"/>
+  <param name="imagemap.hotspot.text.color" expression="${imagemap.hotspot.text.color}" if:set="imagemap.hotspot.text.color" xmlns:if="ant:if"/>
 </extension>
 
diff --git a/plugin.xml b/plugin.xml
index 8aa188d..4eb61fc 100644
--- a/plugin.xml
+++ b/plugin.xml
@@ -13,5 +13,7 @@
       <val desc="No" default="true">no</val>
       <val desc="Yes">yes</val>
     </param>
+    <param name="imagemap.hotspot.shape.color" desc="Hotspot shape color for imagemap. The default value is 'blue'." type="string"/>
+    <param name="imagemap.hotspot.text.color" desc="Hotspot text color for imagemap. The default value is 'white'." type="string"/>
   </transtype>
 </plugin>