Changed the icon for adw-gtk3 warnings, thank you daudix-UFO for help!

src/adwcustomizer.gresource.xml

@@ -11,4 +11,10 @@
     <file>ui/app_type_dialog.ui</file>
     <file>ui/custom_css_group.ui</file>
   </gresource>
+  <gresource prefix="/com/github/ArtyIF/AdwCustomizer/icons/scalable/actions/">
+    <file
+      preprocess="xml-stripblanks"
+      alias="com.github.ArtyIF.AdwCustomizer-adw-gtk3-warning-symbolic.svg"
+     >icons/com.github.ArtyIF.AdwCustomizer-adw-gtk3-warning-symbolic.svg</file>
+  </gresource>
 </gresources>

src/icons/com.github.ArtyIF.AdwCustomizer-adw-gtk3-warning-symbolic.svg

@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   height="16px"
+   viewBox="0 0 16 16"
+   width="16px"
+   version="1.1"
+   id="svg30221"
+   sodipodi:docname="com.github.ArtyIF.AdwCustomizer-adw-gtk3-warning-symbolic.svg"
+   inkscape:version="1.2.1 (9c6d41e410, 2022-07-14)"
+   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"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:dc="http://purl.org/dc/elements/1.1/">
+  <sodipodi:namedview
+     id="namedview31386"
+     pagecolor="#ffffff"
+     bordercolor="#000000"
+     borderopacity="0.25"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     showgrid="false"
+     inkscape:zoom="32"
+     inkscape:cx="-1.65625"
+     inkscape:cy="8.15625"
+     inkscape:window-width="1920"
+     inkscape:window-height="1011"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="layer9"
+     showguides="false" />
+  <defs
+     id="defs30225">
+    <linearGradient
+       id="linearGradient7212"
+       inkscape:swatch="solid">
+      <stop
+         id="stop7214"
+         offset="0"
+         style="stop-color:#000000;stop-opacity:1;" />
+    </linearGradient>
+  </defs>
+  <title
+     id="title9167">Gnome Symbolic Icon Theme</title>
+  <g
+     inkscape:groupmode="layer"
+     id="layer9"
+     inkscape:label="apps"
+     style="display:inline"
+     transform="translate(-443.30751,36.618087)">
+    <path
+       class="warning"
+       d="m 453.62001,-27.618087 c -0.72803,0 -1.3125,0.584473 -1.3125,1.3125 v 4.375 c 0,0.728027 0.58447,1.3125 1.3125,1.3125 h 4.375 c 0.72803,0 1.3125,-0.584473 1.3125,-1.3125 v -4.375 c 0,-0.728027 -0.58447,-1.3125 -1.3125,-1.3125 z m 1.3125,0.875 h 1.75 v 2.1875 c 0,0 0,0.4375 -0.4375,0.4375 h -0.875 c -0.4375,0 -0.4375,-0.4375 -0.4375,-0.4375 z m 0.4375,3.5 h 0.875 c 0.24267,0 0.4375,0.194824 0.4375,0.4375 v 0.875 c 0,0.242676 -0.19483,0.4375 -0.4375,0.4375 h -0.875 c -0.24267,0 -0.4375,-0.194824 -0.4375,-0.4375 v -0.875 c 0,-0.242676 0.19483,-0.4375 0.4375,-0.4375 z m 0,0"
+       fill="#ff7800"
+       id="path1086"
+       style="fill:#000000;fill-opacity:1;stroke-width:0.875" />
+    <path
+       style="color:#000000;fill:#000000;stroke-linejoin:round;-inkscape-stroke:none"
+       d="m 449.80273,-36.482422 -6,3.5 a 1.0001,1.0001 0 0 0 0,1.728516 l 6,3.5 0.50391,-0.863281 0.50391,0.863281 6,-3.5 a 1.0001,1.0001 0 0 0 0,-1.728516 l -6,-3.5 a 1.0001,1.0001 0 0 0 -1.00782,0 z m 0.50391,2.021485 4.01563,2.341796 -4.01563,2.341797 -4.01562,-2.341797 z"
+       id="path1830" />
+    <path
+       style="color:#000000;fill:#000000;stroke-linejoin:round;-inkscape-stroke:none"
+       d="m 443.30664,-32.117187 v 7 a 1.0001,1.0001 0 0 0 0.49609,0.863281 l 6,3.5 a 1.0001,1.0001 0 0 0 1.50391,-0.863281 v -7 h -2 v 5.257812 l -4,-2.333984 v -6.423828 z"
+       id="path1834" />
+    <path
+       style="color:#000000;fill:#000000;stroke-linejoin:round;-inkscape-stroke:none"
+       d="m 455.30664,-32.117187 v 3.5 h 2 v -3.5 z"
+       id="path4360" />
+  </g>
+  <metadata
+     id="metadata31564">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:title>Gnome Symbolic Icon Theme</dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+</svg>

src/ui/option.blp

@@ -5,7 +5,7 @@ template AdwcustomizerOption : Adw.ActionRow {
   [suffix]
   MenuButton warning-button {
     valign: center;
-    icon-name: "dialog-warning-symbolic";
+    icon-name: "com.github.ArtyIF.AdwCustomizer-adw-gtk3-warning-symbolic";
     popover: warning-popover;
     tooltip-text: _("GTK 3 Support Warning");
   }