diff --git a/ApplicationCode/Resources/ResInsight.qrc b/ApplicationCode/Resources/ResInsight.qrc
index dc97fac9ee..a3e4a7cd96 100644
--- a/ApplicationCode/Resources/ResInsight.qrc
+++ b/ApplicationCode/Resources/ResInsight.qrc
@@ -207,12 +207,6 @@
         <file>themes/dark/expanded.svg</file>
         <file>themes/dark/arrow-down.svg</file>
         <file>themes/dark/arrow-up.svg</file>
-        <file>themes/dark/checkbox-unchecked-20x20.png</file>
-        <file>themes/dark/checkbox-checked-20x20.png</file>
-        <file>themes/dark/checkbox-indeterminate-20x20.png</file>
-        <file>themes/dark/checkbox-unchecked-disabled-20x20.png</file>
-        <file>themes/dark/checkbox-checked-disabled-20x20.png</file>
-        <file>themes/dark/checkbox-indeterminate-disabled-20x20.png</file>
         <file>themes/dark/gripper.svg</file>
         <file>themes/light/gripper.svg</file>
         <file>themes/dark/checkbox-checked.svg</file>
diff --git a/ApplicationCode/Resources/themes/dark.qss b/ApplicationCode/Resources/themes/dark.qss
index ffed73f645..8fcf250cdb 100644
--- a/ApplicationCode/Resources/themes/dark.qss
+++ b/ApplicationCode/Resources/themes/dark.qss
@@ -27,38 +27,38 @@ $plotGridColor: #394046; // Plot grid color
 $auxiliaryCurveColor: #000000; // Auxiliary curve color
 $externalInputColor: #e82257; // External input background color
 
-QCheckBox::indicator, QTreeView::indicator, QTableView::indicator {
+QCheckBox::indicator, QTreeView::indicator, QTableView::indicator, QListWidget::indicator {
     background-color: $backgroundColor1;
     border-radius: 3px;
     width: 16px;
     height: 16px;
 }
 
-QCheckBox::indicator:unchecked, QTreeView::indicator:unchecked, QTableView::indicator:unchecked
+QCheckBox::indicator:unchecked, QTreeView::indicator:unchecked, QTableView::indicator:unchecked, QListWidget::indicator:unchecked
 {
     image: url(:/themes/dark/checkbox-unchecked.svg);
 }
 
-QCheckBox::indicator:checked, QTreeView::indicator:checked, QTableView::indicator:checked
+QCheckBox::indicator:checked, QTreeView::indicator:checked, QTableView::indicator:checked, QListWidget::indicator:checked
 {
     image: url(:/themes/dark/checkbox-checked.svg);
 }
-QCheckBox::indicator:indeterminate, QTreeView::indicator:indeterminate, QTableView::indicator:indeterminate
+QCheckBox::indicator:indeterminate, QTreeView::indicator:indeterminate, QTableView::indicator:indeterminate, QListWidget::indicator:indeterminate
 {
     image: url(:/themes/dark/checkbox-indeterminate.svg);
 }
 
-QCheckBox::indicator:unchecked:disabled, QTreeView::indicator:unchecked:disabled, QTableView::indicator:unchecked:disabled
+QCheckBox::indicator:unchecked:disabled, QTreeView::indicator:unchecked:disabled, QTableView::indicator:unchecked:disabled, QListWidget::indicator:unchecked:disabled
 {
     image: url(:/themes/dark/checkbox-unchecked-disabled.svg);
 }
 
-QCheckBox::indicator:checked:disabled, QTreeView::indicator:checked:disabled, QTableView::indicator:checked:disabled
+QCheckBox::indicator:checked:disabled, QTreeView::indicator:checked:disabled, QTableView::indicator:checked:disabled, QListWidget::indicator:checked:disabled
 {
     image: url(:/themes/dark/checkbox-checked-disabled.svg);
 }
 
-QCheckBox::indicator:indeterminate:disabled, QTreeView::indicator:indeterminate:disabled, QTableView::indicator:indeterminate:disabled
+QCheckBox::indicator:indeterminate:disabled, QTreeView::indicator:indeterminate:disabled, QTableView::indicator:indeterminate:disabled, QListWidget::indicator:indeterminate:disabled
 {
     image: url(:/themes/dark/checkbox-indeterminate-disabled.svg);
 }
diff --git a/ApplicationCode/Resources/themes/dark/checkbox-checked-20x20.png b/ApplicationCode/Resources/themes/dark/checkbox-checked-20x20.png
deleted file mode 100644
index 8b6aceb453..0000000000
Binary files a/ApplicationCode/Resources/themes/dark/checkbox-checked-20x20.png and /dev/null differ
diff --git a/ApplicationCode/Resources/themes/dark/checkbox-checked-disabled-20x20.png b/ApplicationCode/Resources/themes/dark/checkbox-checked-disabled-20x20.png
deleted file mode 100644
index 6f8dc1af4d..0000000000
Binary files a/ApplicationCode/Resources/themes/dark/checkbox-checked-disabled-20x20.png and /dev/null differ
diff --git a/ApplicationCode/Resources/themes/dark/checkbox-checked-disabled.svg b/ApplicationCode/Resources/themes/dark/checkbox-checked-disabled.svg
index ff95d20a4e..421a829a46 100644
--- a/ApplicationCode/Resources/themes/dark/checkbox-checked-disabled.svg
+++ b/ApplicationCode/Resources/themes/dark/checkbox-checked-disabled.svg
@@ -1,13 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Generator: Adobe Illustrator 24.1.2, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
-<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 12.9 12.9" style="enable-background:new 0 0 12.9 12.9;" xml:space="preserve">
-<style type="text/css">
+<svg version="1.1" id="Layer_1" x="0px" y="0px" viewBox="0 0 12.9 12.9" style="enable-background:new 0 0 12.9 12.9;" xmlns="http://www.w3.org/2000/svg">
+  <style type="text/css">
 	.st0{display:none;fill:#394046;}
 	.st1{fill:none;stroke:#5C6169;stroke-width:1.5;stroke-miterlimit:10;}
 	.st2{display:none;fill:#5C6169;}
 </style>
-<rect class="st0" width="12.9" height="12.9"/>
-<polyline class="st1" points="2.7,6.8 5.6,9.7 11.3,4.1 "/>
-<rect x="3" y="3" class="st2" width="7" height="7"/>
-</svg>
+  <rect class="st0" width="12.9" height="12.9"/>
+  <polyline class="st1" points="2.15 6.35 5.05 9.25 10.75 3.65"/>
+  <rect x="3" y="3" class="st2" width="7" height="7"/>
+</svg>
\ No newline at end of file
diff --git a/ApplicationCode/Resources/themes/dark/checkbox-checked.svg b/ApplicationCode/Resources/themes/dark/checkbox-checked.svg
index b75336e2f1..9a5bdb2413 100644
--- a/ApplicationCode/Resources/themes/dark/checkbox-checked.svg
+++ b/ApplicationCode/Resources/themes/dark/checkbox-checked.svg
@@ -1,13 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Generator: Adobe Illustrator 24.1.2, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
-<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 12.9 12.9" style="enable-background:new 0 0 12.9 12.9;" xml:space="preserve">
-<style type="text/css">
+<svg version="1.1" id="Layer_1" x="0px" y="0px" viewBox="0 0 12.9 12.9" style="enable-background:new 0 0 12.9 12.9;" xmlns="http://www.w3.org/2000/svg">
+  <style type="text/css">
 	.st0{display:none;fill:#394046;}
 	.st1{fill:none;stroke:#E8E8EA;stroke-width:1.5;stroke-miterlimit:10;}
 	.st2{display:none;fill:#E7E8EA;}
 </style>
-<rect class="st0" width="12.9" height="12.9"/>
-<polyline class="st1" points="2.7,6.8 5.6,9.7 11.3,4.1 "/>
-<rect x="2.9" y="2.9" class="st2" width="7" height="7"/>
-</svg>
+  <rect class="st0" width="12.9" height="12.9"/>
+  <polyline class="st1" points="2.15 6.35 5.05 9.25 10.75 3.65"/>
+  <rect x="2.9" y="2.9" class="st2" width="7" height="7"/>
+</svg>
\ No newline at end of file
diff --git a/ApplicationCode/Resources/themes/dark/checkbox-indeterminate-20x20.png b/ApplicationCode/Resources/themes/dark/checkbox-indeterminate-20x20.png
deleted file mode 100644
index a224ea02b3..0000000000
Binary files a/ApplicationCode/Resources/themes/dark/checkbox-indeterminate-20x20.png and /dev/null differ
diff --git a/ApplicationCode/Resources/themes/dark/checkbox-indeterminate-disabled-20x20.png b/ApplicationCode/Resources/themes/dark/checkbox-indeterminate-disabled-20x20.png
deleted file mode 100644
index 3f538aa571..0000000000
Binary files a/ApplicationCode/Resources/themes/dark/checkbox-indeterminate-disabled-20x20.png and /dev/null differ
diff --git a/ApplicationCode/Resources/themes/dark/checkbox-indeterminate-disabled.svg b/ApplicationCode/Resources/themes/dark/checkbox-indeterminate-disabled.svg
index 8762076c26..aec7575bb1 100644
--- a/ApplicationCode/Resources/themes/dark/checkbox-indeterminate-disabled.svg
+++ b/ApplicationCode/Resources/themes/dark/checkbox-indeterminate-disabled.svg
@@ -1,13 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Generator: Adobe Illustrator 24.1.2, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
-<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 12.9 12.9" style="enable-background:new 0 0 12.9 12.9;" xml:space="preserve">
-<style type="text/css">
+<svg version="1.1" id="Layer_1" x="0px" y="0px" viewBox="0 0 12.9 12.9" style="enable-background:new 0 0 12.9 12.9;" xmlns="http://www.w3.org/2000/svg">
+  <style type="text/css">
 	.st0{display:none;fill:#394046;}
 	.st1{display:none;fill:none;stroke:#E8E8EA;stroke-width:1.5;stroke-miterlimit:10;}
 	.st2{fill:#5C6169;}
 </style>
-<rect class="st0" width="12.9" height="12.9"/>
-<polyline class="st1" points="2.7,6.8 5.6,9.7 11.3,4.1 "/>
-<rect x="3" y="3" class="st2" width="7" height="7"/>
-</svg>
+  <rect class="st0" width="12.9" height="12.9"/>
+  <polyline class="st1" points="2.7,6.8 5.6,9.7 11.3,4.1 "/>
+  <rect x="2.95" y="2.95" class="st2" width="7" height="7"/>
+</svg>
\ No newline at end of file
diff --git a/ApplicationCode/Resources/themes/dark/checkbox-indeterminate.svg b/ApplicationCode/Resources/themes/dark/checkbox-indeterminate.svg
index 03ac3411b5..4c970cf57e 100644
--- a/ApplicationCode/Resources/themes/dark/checkbox-indeterminate.svg
+++ b/ApplicationCode/Resources/themes/dark/checkbox-indeterminate.svg
@@ -1,13 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Generator: Adobe Illustrator 24.1.2, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
-<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 12.9 12.9" style="enable-background:new 0 0 12.9 12.9;" xml:space="preserve">
-<style type="text/css">
+<svg version="1.1" id="Layer_1" x="0px" y="0px" viewBox="0 0 12.9 12.9" style="enable-background:new 0 0 12.9 12.9;" xmlns="http://www.w3.org/2000/svg">
+  <style type="text/css">
 	.st0{display:none;fill:#394046;}
 	.st1{display:none;fill:none;stroke:#E8E8EA;stroke-width:1.5;stroke-miterlimit:10;}
 	.st2{fill:#E7E8EA;}
 </style>
-<rect class="st0" width="12.9" height="12.9"/>
-<polyline class="st1" points="2.7,6.8 5.6,9.7 11.3,4.1 "/>
-<rect x="3" y="3" class="st2" width="7" height="7"/>
-</svg>
+  <rect class="st0" width="12.9" height="12.9"/>
+  <polyline class="st1" points="2.7,6.8 5.6,9.7 11.3,4.1 "/>
+  <rect x="2.95" y="2.95" class="st2" width="7" height="7"/>
+</svg>
\ No newline at end of file
diff --git a/ApplicationCode/Resources/themes/dark/checkbox-unchecked-20x20.png b/ApplicationCode/Resources/themes/dark/checkbox-unchecked-20x20.png
deleted file mode 100644
index 2aa83d789e..0000000000
Binary files a/ApplicationCode/Resources/themes/dark/checkbox-unchecked-20x20.png and /dev/null differ
diff --git a/ApplicationCode/Resources/themes/dark/checkbox-unchecked-disabled-20x20.png b/ApplicationCode/Resources/themes/dark/checkbox-unchecked-disabled-20x20.png
deleted file mode 100644
index cdb3968479..0000000000
Binary files a/ApplicationCode/Resources/themes/dark/checkbox-unchecked-disabled-20x20.png and /dev/null differ
diff --git a/ApplicationCode/Resources/themes/dark/checkbox.xcf b/ApplicationCode/Resources/themes/dark/checkbox.xcf
deleted file mode 100644
index a5d56ba641..0000000000
Binary files a/ApplicationCode/Resources/themes/dark/checkbox.xcf and /dev/null differ