diff --git a/reference/image/functions/imagecolorclosest.xml b/reference/image/functions/imagecolorclosest.xml
index 7bf5a02f7b..97976ebc25 100644
--- a/reference/image/functions/imagecolorclosest.xml
+++ b/reference/image/functions/imagecolorclosest.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 <!-- splitted from ./en/functions/image.xml, last change in rev 1.36 -->
  <refentry id="function.imagecolorclosest">
   <refnamediv>
@@ -24,6 +24,10 @@
     palette is calculated as if the <acronym>RGB</acronym> values
     represented points in three-dimensional space.
    </para>
+   <para>
+    If you created the image from a file, only colors used in the image are
+    resolved. Colors present only in the pallete are not resolved.
+   </para>
    <para>
     See also <function>imagecolorexact</function>.
    </para>
diff --git a/reference/image/functions/imagecolorexact.xml b/reference/image/functions/imagecolorexact.xml
index e20f7b3bab..56578fa716 100644
--- a/reference/image/functions/imagecolorexact.xml
+++ b/reference/image/functions/imagecolorexact.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 <!-- splitted from ./en/functions/image.xml, last change in rev 1.36 -->
  <refentry id="function.imagecolorexact">
   <refnamediv>
@@ -23,6 +23,10 @@
     If the color does not exist in the image's palette, -1 is
     returned.
    </para>
+   <para>
+    If you created the image from a file, only colors used in the image are
+    resolved. Colors present only in the pallete are not resolved.
+   </para>
    <para>
     See also <function>imagecolorclosest</function>.
    </para>
diff --git a/reference/image/functions/imagecolorresolve.xml b/reference/image/functions/imagecolorresolve.xml
index 91980d39e9..b7a40a978d 100644
--- a/reference/image/functions/imagecolorresolve.xml
+++ b/reference/image/functions/imagecolorresolve.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 <!-- splitted from ./en/functions/image.xml, last change in rev 1.36 -->
  <refentry id="function.imagecolorresolve">
   <refnamediv>
@@ -23,6 +23,10 @@
     requested color, either the exact color or the closest possible
     alternative.
    </para>
+   <para>
+    If you created the image from a file, only colors used in the image are
+    resolved. Colors present only in the pallete are not resolved.
+   </para>
    <para>
     See also <function>imagecolorclosest</function>.
    </para>