diff --git a/preview/AWI_Basemap_Antarctic.png b/preview/AWI_Basemap_Antarctic.png
deleted file mode 100644
index 8faf028cc10ea3b726bcebb12db5245328591560..0000000000000000000000000000000000000000
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diff --git a/preview/AWI_Basemap_Antarctic_blue.png b/preview/AWI_Basemap_Antarctic_blue.png
new file mode 100644
index 0000000000000000000000000000000000000000..e11421f4699f26e7802ea72196739bd899d4fe72
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diff --git a/preview/AWI_Basemap_Antarctic_bright.png b/preview/AWI_Basemap_Antarctic_bright.png
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index 0e014dccf7f8c7e914ffdc5fad79514682c69391..0000000000000000000000000000000000000000
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diff --git a/preview/AWI_Basemap_Antarctic_dark.png b/preview/AWI_Basemap_Antarctic_dark.png
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diff --git a/preview/AWI_Basemap_Antarctic_grey.png b/preview/AWI_Basemap_Antarctic_grey.png
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diff --git a/preview/AWI_Basemap_Antarctic_greyblue.png b/preview/AWI_Basemap_Antarctic_greyblue.png
new file mode 100644
index 0000000000000000000000000000000000000000..05de1d6c4c4d416eaffc02cae88441e98b21392e
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diff --git a/preview/AWI_Basemap_Arctic.png b/preview/AWI_Basemap_Arctic.png
deleted file mode 100644
index d25556682698dcac8af6e01e1be41c20edb69ae6..0000000000000000000000000000000000000000
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diff --git a/preview/AWI_Basemap_Arctic_blue.png b/preview/AWI_Basemap_Arctic_blue.png
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index 75306aeb90b09dbf86bc67bc16f5a03ec9a45945..0000000000000000000000000000000000000000
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diff --git a/preview/AWI_Basemap_Arctic_grey.png b/preview/AWI_Basemap_Arctic_grey.png
new file mode 100644
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index 0000000000000000000000000000000000000000..4661d90c0bd1c921887033b89b64b7266fe2fd37
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diff --git a/preview/AWI_Basemap_World.png b/preview/AWI_Basemap_World.png
deleted file mode 100644
index e86059dd17c371822d393988443de3c280b7e37b..0000000000000000000000000000000000000000
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diff --git a/preview/AWI_Basemap_World_blue.png b/preview/AWI_Basemap_World_blue.png
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index 0000000000000000000000000000000000000000..15d17623c3506d11d946c70e2061d0b8606a8cd9
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diff --git a/preview/AWI_Basemap_World_bright.png b/preview/AWI_Basemap_World_bright.png
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index d8d7d8a57b6a13e23fef8183bf1dcc925fe26936..0000000000000000000000000000000000000000
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diff --git a/preview/AWI_Basemap_World_dark.png b/preview/AWI_Basemap_World_dark.png
deleted file mode 100644
index dce1d265d591c6f36a4ff8161524d17100d69048..0000000000000000000000000000000000000000
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diff --git a/preview/AWI_Basemap_World_grey.png b/preview/AWI_Basemap_World_grey.png
new file mode 100644
index 0000000000000000000000000000000000000000..ff37c52952d5ebde1ca0259e205b757b5a7cfab9
Binary files /dev/null and b/preview/AWI_Basemap_World_grey.png differ
diff --git a/preview/AWI_Basemap_World_greyblue.png b/preview/AWI_Basemap_World_greyblue.png
new file mode 100644
index 0000000000000000000000000000000000000000..d3e81f4e452c18b763a7a541efbed83ff15f11a1
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diff --git a/preview/README.md b/preview/README.md
index 738f0d77dae48e85dd21eafc0aeb152db88e41c7..0dea4851f1ee754e4f24276dd59f9c7083dc1de2 100644
--- a/preview/README.md
+++ b/preview/README.md
@@ -4,33 +4,33 @@ Here are some previews of the final results:
 
 ##### World
 
-Default:
-![AWI Basemap World Default](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_World.png)
+blue:
+![AWI Basemap World Default](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_World_blue.png)
 
-Bright:
-![AWI Basemap World Bright](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_World_bright.png)
+greyblue:
+![AWI Basemap World Bright](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_World_greyblue.png)
 
-Dark:
-![AWI Basemap World Dark](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_World_dark.png)
+grey:
+![AWI Basemap World Dark](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_World_grey.png)
 
 ##### Arctic
 
-Default:
-![AWI Basemap Arctic Default](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Arctic.png)
+blue:
+![AWI Basemap Arctic Default](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Arctic_blue.png)
 
-Bright:
-![AWI Basemap Arctic Bright](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Arctic_bright.png)
+greyblue:
+![AWI Basemap Arctic Bright](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Arctic_greyblue.png)
 
-Dark:
-![AWI Basemap Arctic Dark](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Arctic_dark.png)
+grey:
+![AWI Basemap Arctic Dark](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Arctic_grey.png)
 
 ##### Antarctic
 
-Default:
-![AWI Basemap Antarctic Default](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Antarctic.png)
+blue:
+![AWI Basemap Antarctic Default](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Antarctic_blue.png)
 
-Bright:
-![AWI Basemap Antarctic Bright](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Antarctic_bright.png)
+greyblue:
+![AWI Basemap Antarctic Bright](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Antarctic_greyblue.png)
 
-Dark:
-![AWI Basemap Antarctic Dark](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Antarctic_dark.png)
+grey:
+![AWI Basemap Antarctic Dark](https://gitlab.awi.de/sdreutte/basemap/-/raw/master/preview/AWI_Basemap_Antarctic_grey.png)
diff --git a/styles/qml_layer_styles/ice_shelfs.qml b/styles/qml_layer_styles/ice_shelfs.qml
deleted file mode 100644
index f8990045adc10e12cc33152d7c3d087b31c1baa7..0000000000000000000000000000000000000000
--- a/styles/qml_layer_styles/ice_shelfs.qml
+++ /dev/null
@@ -1,34 +0,0 @@
-<!DOCTYPE qgis PUBLIC 'http://mrcc.com/qgis.dtd' 'SYSTEM'>
-<qgis version="3.16.0-Hannover" styleCategories="Symbology">
-  <renderer-v2 symbollevels="0" enableorderby="0" type="singleSymbol" forceraster="0">
-    <symbols>
-      <symbol force_rhr="0" type="fill" name="0" alpha="1" clip_to_extent="1">
-        <layer enabled="1" class="SimpleFill" pass="0" locked="0">
-          <prop k="border_width_map_unit_scale" v="3x:0,0,0,0,0,0"/>
-          <prop k="color" v="242,242,242,255"/>
-          <prop k="joinstyle" v="bevel"/>
-          <prop k="offset" v="0,0"/>
-          <prop k="offset_map_unit_scale" v="3x:0,0,0,0,0,0"/>
-          <prop k="offset_unit" v="MM"/>
-          <prop k="outline_color" v="35,35,35,0"/>
-          <prop k="outline_style" v="solid"/>
-          <prop k="outline_width" v="0.26"/>
-          <prop k="outline_width_unit" v="MM"/>
-          <prop k="style" v="solid"/>
-          <data_defined_properties>
-            <Option type="Map">
-              <Option value="" type="QString" name="name"/>
-              <Option name="properties"/>
-              <Option value="collection" type="QString" name="type"/>
-            </Option>
-          </data_defined_properties>
-        </layer>
-      </symbol>
-    </symbols>
-    <rotation/>
-    <sizescale/>
-  </renderer-v2>
-  <blendMode>0</blendMode>
-  <featureBlendMode>0</featureBlendMode>
-  <layerGeometryType>2</layerGeometryType>
-</qgis>
diff --git a/styles/qml_layer_styles/rock_outcrops.qml b/styles/qml_layer_styles/rock_outcrops.qml
deleted file mode 100644
index ec552bc74b17651df43cbc17e3ffedb4786d9092..0000000000000000000000000000000000000000
--- a/styles/qml_layer_styles/rock_outcrops.qml
+++ /dev/null
@@ -1,34 +0,0 @@
-<!DOCTYPE qgis PUBLIC 'http://mrcc.com/qgis.dtd' 'SYSTEM'>
-<qgis version="3.16.1-Hannover" styleCategories="Symbology">
-  <renderer-v2 symbollevels="0" forceraster="0" type="singleSymbol" enableorderby="0">
-    <symbols>
-      <symbol alpha="1" force_rhr="0" type="fill" clip_to_extent="1" name="0">
-        <layer pass="0" enabled="1" class="SimpleFill" locked="0">
-          <prop k="border_width_map_unit_scale" v="3x:0,0,0,0,0,0"/>
-          <prop k="color" v="179,179,179,255"/>
-          <prop k="joinstyle" v="bevel"/>
-          <prop k="offset" v="0,0"/>
-          <prop k="offset_map_unit_scale" v="3x:0,0,0,0,0,0"/>
-          <prop k="offset_unit" v="MM"/>
-          <prop k="outline_color" v="35,35,35,0"/>
-          <prop k="outline_style" v="solid"/>
-          <prop k="outline_width" v="0.26"/>
-          <prop k="outline_width_unit" v="MM"/>
-          <prop k="style" v="solid"/>
-          <data_defined_properties>
-            <Option type="Map">
-              <Option type="QString" value="" name="name"/>
-              <Option name="properties"/>
-              <Option type="QString" value="collection" name="type"/>
-            </Option>
-          </data_defined_properties>
-        </layer>
-      </symbol>
-    </symbols>
-    <rotation/>
-    <sizescale/>
-  </renderer-v2>
-  <blendMode>0</blendMode>
-  <featureBlendMode>0</featureBlendMode>
-  <layerGeometryType>2</layerGeometryType>
-</qgis>