diff --git a/frontend/index.html b/frontend/index.html
index ac5cba95..edbbb52c 100755
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -75,79 +75,79 @@
           <dd>
             <ul class="data-legend">
               <li>
-                <span class="key" style="background: #fcfcb8">-</span>
+                <span class="key" style="background: #f0eaba">-</span>
                 &gt;=2000
               </li>
               <li>
-                <span class="key" style="background: #fee9a5">-</span>
+                <span class="key" style="background: #fae269">-</span>
                 1980-2000
               </li>
               <li>
-                <span class="key" style="background: #fec580">-</span>
+                <span class="key" style="background: #fbaf27">-</span>
                 1960-1980
               </li>
               <li>
-                <span class="key" style="background: #ffb63c">-</span>
+                <span class="key" style="background: #e6711d">-</span>
                 1940-1960
               </li>
               <li>
-                <span class="key" style="background: #ff7e3e">-</span>
+                <span class="key" style="background: #d73d3a">-</span>
                 1920-1940
               </li>
               <li>
-                <span class="key" style="background: #ff5353">-</span>
+                <span class="key" style="background: #ba221c">-</span>
                 1900-1920
               </li>
               <li>
-                <span class="key" style="background: #df73ff">-</span>
+                <span class="key" style="background: #bb859b">-</span>
                 1880-1900
               </li>
               <li>
-                <span class="key" style="background: #b81ae7">-</span>
+                <span class="key" style="background: #8b3654">-</span>
                 1860-1880
               </li>
               <li>
-                <span class="key" style="background: #8400a8">-</span>
+                <span class="key" style="background: #8f5385">-</span>
                 1840-1860
               </li>
               <li>
-                <span class="key" style="background: #73ffdf">-</span>
+                <span class="key" style="background: #56619b">-</span>
                 1820-1840
               </li>
               <li>
-                <span class="key" style="background: #00ffc5">-</span>
+                <span class="key" style="background: #6793b2">-</span>
                 1800-1820
               </li>
               <li>
-                <span class="key" style="background: #00c5ff">-</span>
+                <span class="key" style="background: #83c3b3">-</span>
                 1780-1800
               </li>
               <li>
-                <span class="key" style="background: #73b2ff">-</span>
+                <span class="key" style="background: #adc88f">-</span>
                 1760-1780
               </li>
               <li>
-                <span class="key" style="background: #00a9e6">-</span>
+                <span class="key" style="background: #83a663">-</span>
                 1740-1760
               </li>
               <li>
-                <span class="key" style="background: #0070ff">-</span>
+                <span class="key" style="background: #77852d">-</span>
                 1720-1740
               </li>
               <li>
-                <span class="key" style="background: #004da8">-</span>
+                <span class="key" style="background: #69814e">-</span>
                 1700-1720
               </li>
               <li>
-                <span class="key" style="background: #897044">-</span>
+                <span class="key" style="background: #d0c291">-</span>
                 1680-1700
               </li>
               <li>
-                <span class="key" style="background: #894444">-</span>
+                <span class="key" style="background: #918158">-</span>
                 1660-1680
               </li>
               <li>
-                <span class="key" style="background: #4c0073">-</span>
+                <span class="key" style="background: #7a5732">-</span>
                 &lt;1660
               </li>
             </ul>
diff --git a/frontend/maps.html b/frontend/maps.html
index 45b99f3d..a8609629 100755
--- a/frontend/maps.html
+++ b/frontend/maps.html
@@ -69,79 +69,79 @@
         <dd>
           <ul class="data-legend">
             <li>
-              <span class="key" style="background: #fcfcb8">-</span>
+              <span class="key" style="background: #f0eaba">-</span>
               &gt;=2000
             </li>
             <li>
-              <span class="key" style="background: #fee9a5">-</span>
+              <span class="key" style="background: #fae269">-</span>
               1980-2000
             </li>
             <li>
-              <span class="key" style="background: #fec580">-</span>
+              <span class="key" style="background: #fbaf27">-</span>
               1960-1980
             </li>
             <li>
-              <span class="key" style="background: #ffb63c">-</span>
+              <span class="key" style="background: #e6711d">-</span>
               1940-1960
             </li>
             <li>
-              <span class="key" style="background: #ff7e3e">-</span>
+              <span class="key" style="background: #d73d3a">-</span>
               1920-1940
             </li>
             <li>
-              <span class="key" style="background: #ff5353">-</span>
+              <span class="key" style="background: #ba221c">-</span>
               1900-1920
             </li>
             <li>
-              <span class="key" style="background: #df73ff">-</span>
+              <span class="key" style="background: #bb859b">-</span>
               1880-1900
             </li>
             <li>
-              <span class="key" style="background: #b81ae7">-</span>
+              <span class="key" style="background: #8b3654">-</span>
               1860-1880
             </li>
             <li>
-              <span class="key" style="background: #8400a8">-</span>
+              <span class="key" style="background: #8f5385">-</span>
               1840-1860
             </li>
             <li>
-              <span class="key" style="background: #73ffdf">-</span>
+              <span class="key" style="background: #56619b">-</span>
               1820-1840
             </li>
             <li>
-              <span class="key" style="background: #00ffc5">-</span>
+              <span class="key" style="background: #6793b2">-</span>
               1800-1820
             </li>
             <li>
-              <span class="key" style="background: #00c5ff">-</span>
+              <span class="key" style="background: #83c3b3">-</span>
               1780-1800
             </li>
             <li>
-              <span class="key" style="background: #73b2ff">-</span>
+              <span class="key" style="background: #adc88f">-</span>
               1760-1780
             </li>
             <li>
-              <span class="key" style="background: #00a9e6">-</span>
+              <span class="key" style="background: #83a663">-</span>
               1740-1760
             </li>
             <li>
-              <span class="key" style="background: #0070ff">-</span>
+              <span class="key" style="background: #77852d">-</span>
               1720-1740
             </li>
             <li>
-              <span class="key" style="background: #004da8">-</span>
+              <span class="key" style="background: #69814e">-</span>
               1700-1720
             </li>
             <li>
-              <span class="key" style="background: #897044">-</span>
+              <span class="key" style="background: #d0c291">-</span>
               1680-1700
             </li>
             <li>
-              <span class="key" style="background: #894444">-</span>
+              <span class="key" style="background: #918158">-</span>
               1660-1680
             </li>
             <li>
-              <span class="key" style="background: #4c0073">-</span>
+              <span class="key" style="background: #7a5732">-</span>
               &lt;1660
             </li>
           </ul>
diff --git a/tileserver/map_styles/polygon.xml b/tileserver/map_styles/polygon.xml
index 1488c9bd..67d53966 100644
--- a/tileserver/map_styles/polygon.xml
+++ b/tileserver/map_styles/polygon.xml
@@ -55,97 +55,97 @@
     <Style name="date_year">
         <Rule>
             <Filter>[date_year] &gt;= 2000</Filter>
-            <PolygonSymbolizer fill="#fcfcb8" />
+            <PolygonSymbolizer fill="#f0eaba" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1980 and [date_year] &lt; 2000</Filter>
-            <PolygonSymbolizer fill="#fee9a5" />
+            <PolygonSymbolizer fill="#fae269" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1960 and [date_year] &lt; 1980</Filter>
-            <PolygonSymbolizer fill="#fec580" />
+            <PolygonSymbolizer fill="#fbaf27" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1940 and [date_year] &lt; 1960</Filter>
-            <PolygonSymbolizer fill="#ffb63c" />
+            <PolygonSymbolizer fill="#e6711d" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1920 and [date_year] &lt; 1940</Filter>
-            <PolygonSymbolizer fill="#ff7e3e" />
+            <PolygonSymbolizer fill="#d73d3a" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1900 and [date_year] &lt; 1920</Filter>
-            <PolygonSymbolizer fill="#ff5353" />
+            <PolygonSymbolizer fill="#ba221c" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1880 and [date_year] &lt; 1900</Filter>
-            <PolygonSymbolizer fill="#df73ff" />
+            <PolygonSymbolizer fill="#bb859b" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1860 and [date_year] &lt; 1880</Filter>
-            <PolygonSymbolizer fill="#b81ae7" />
+            <PolygonSymbolizer fill="#8b3654" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1840 and [date_year] &lt; 1860</Filter>
-            <PolygonSymbolizer fill="#8400a8" />
+            <PolygonSymbolizer fill="#8f5385" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1820 and [date_year] &lt; 1840</Filter>
-            <PolygonSymbolizer fill="#73ffdf" />
+            <PolygonSymbolizer fill="#56619b" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1800 and [date_year] &lt; 1820</Filter>
-            <PolygonSymbolizer fill="#00ffc5" />
+            <PolygonSymbolizer fill="#6793b2" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1780 and [date_year] &lt; 1800</Filter>
-            <PolygonSymbolizer fill="#00c5ff" />
+            <PolygonSymbolizer fill="#83c3b3" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1760 and [date_year] &lt; 1780</Filter>
-            <PolygonSymbolizer fill="#73b2ff" />
+            <PolygonSymbolizer fill="#adc88f" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1740 and [date_year] &lt; 1760</Filter>
-            <PolygonSymbolizer fill="#00a9e6" />
+            <PolygonSymbolizer fill="#83a663" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1720 and [date_year] &lt; 1740</Filter>
-            <PolygonSymbolizer fill="#0070ff" />
+            <PolygonSymbolizer fill="#77852d" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1700 and [date_year] &lt; 1720</Filter>
-            <PolygonSymbolizer fill="#004da8" />
+            <PolygonSymbolizer fill="#69814e" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1680 and [date_year] &lt; 1700</Filter>
-            <PolygonSymbolizer fill="#897044" />
+            <PolygonSymbolizer fill="#d0c291" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &gt;= 1660 and [date_year] &lt; 1680</Filter>
-            <PolygonSymbolizer fill="#894444" />
+            <PolygonSymbolizer fill="#918158" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>
             <Filter>[date_year] &lt; 1660</Filter>
-            <PolygonSymbolizer fill="#4c0073" />
+            <PolygonSymbolizer fill="#7a5732" />
             <LineSymbolizer stroke="white" stroke-width="0.3" />
         </Rule>
         <Rule>