diff --git a/resources/right_arrow.svg b/resources/right_arrow.svg
new file mode 100644
index 0000000..4ab9fbd
--- /dev/null
+++ b/resources/right_arrow.svg
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="16"
+   height="16"
+   viewBox="0 0 16 16"
+   version="1.1"
+   id="svg1"
+   inkscape:version="1.4 (e7c3feb1, 2024-10-09)"
+   sodipodi:docname="right_arrow.svg"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <sodipodi:namedview
+     id="namedview1"
+     pagecolor="#ffffff"
+     bordercolor="#999999"
+     borderopacity="1"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     inkscape:document-units="px"
+     inkscape:zoom="57.72"
+     inkscape:cx="6.8693694"
+     inkscape:cy="7.52772"
+     inkscape:window-width="1512"
+     inkscape:window-height="836"
+     inkscape:window-x="0"
+     inkscape:window-y="38"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="layer1" />
+  <defs
+     id="defs1" />
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <path
+       sodipodi:type="star"
+       style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.154168;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:none;stroke-opacity:1"
+       id="path1"
+       inkscape:flatsided="false"
+       sodipodi:sides="3"
+       sodipodi:cx="5.0945272"
+       sodipodi:cy="5.9900498"
+       sodipodi:r1="1.9104478"
+       sodipodi:r2="0.95522392"
+       sodipodi:arg1="1.5707963"
+       sodipodi:arg2="2.6179939"
+       inkscape:rounded="0"
+       inkscape:randomized="0"
+       d="M 5.0945273,7.9004977 4.2672791,6.4676618 3.4400309,5.034826 l 1.6544964,-10e-8 1.6544963,0 -0.8272482,1.4328359 z"
+       transform="matrix(0,-2.3912596,1.4291353,0,-0.56059112,19.499764)"
+       inkscape:transform-center-x="-0.68257261" />
+  </g>
+</svg>
diff --git a/resources/style.qss b/resources/style.qss
index 805f8b9..5b4aaaa 100644
--- a/resources/style.qss
+++ b/resources/style.qss
@@ -145,6 +145,7 @@ QTreeView {
 }
 
 QTreeView QHeaderView::section {
+    color: white;
     background-color: #2b2b2b;
     border: 0;
     font-weight: 500;
@@ -170,7 +171,18 @@ QTreeView QScrollBar:vertical {
     margin-top: 16px;
 }
 
+QTreeView::branch:has-children:!has-siblings:closed,
+QTreeView::branch:closed:has-children:has-siblings {
+        image: url("{IMAGE_PREFIX}/right_arrow.svg");
+}
+
+QTreeView::branch:open:has-children:!has-siblings,
+QTreeView::branch:open:has-children:has-siblings  {
+        image: url("{IMAGE_PREFIX}/down_arrow.svg");
+}
+
 QTextBrowser {
+    color: white;
     background-color: #1a1a1a;
     selection-background-color: #1a73e8;
 }
@@ -326,6 +338,10 @@ QScrollBar::sub-line:horizontal {
     subcontrol-origin: margin;
 }
 
+QMessageBox QLabel {
+    color: white;
+}
+
 WrapCheckboxWidget {
     show-decoration-selected: 1;
     outline: 0;