added gtk theme

.config/gtk-4.0/assets/scale-horz-marks-after-slider-disabled-dark@2.svg

@@ -0,0 +1,14 @@
+<svg width="48" height="48" version="1.1" xmlns="http://www.w3.org/2000/svg">
+ <defs>
+  <linearGradient id="color-base-dark" x1="4" x2="19.997" y1="4" y2="4" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#eff1f5" offset="1"/>
+  </linearGradient>
+  <linearGradient id="color-primary-light" x1="4" x2="19.997" y1="4" y2="4" gradientUnits="userSpaceOnUse">
+   <stop stop-color="#7287fd" stop-opacity=".3" offset="1"/>
+  </linearGradient>
+ </defs>
+ <g id="scale-horz-marks-before-slider-dark" transform="matrix(-2,0,0,-2,48,48)">
+  <rect width="24" height="24" fill="none"/>
+  <path transform="rotate(45,12,12)" d="m6 6h6a6 6 0 1 1-6 6z" fill="url(#color-base-dark)" stroke="url(#color-primary-light)" stroke-linecap="round" stroke-width="4" style="paint-order:stroke fill markers"/>
+ </g>
+</svg>