Fix color icon

Reduce svg size to avoid strange behaviour on menu opened.

data/icons/color-symbolic.svg

@@ -1,21 +1,18 @@
 <?xml version="1.0" standalone="no"?>
 <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
  "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
-<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
- width="1280.000000pt" height="1280.000000pt" viewBox="0 0 1280.000000 1280.000000"
- preserveAspectRatio="xMidYMid meet">
+<svg version="1.0" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128">
 <metadata>
 Created by potrace 1.15, written by Peter Selinger 2001-2017
 https://svgsilh.com/image/1745699.html
 https://creativecommons.org/publicdomain/zero/1.0
 </metadata>
-<g transform="translate(0.000000,1280.000000) scale(0.100000,-0.100000)"
-fill="#474747" stroke="none">
-<path d="M6327 11528 c-810 -978 -1626 -2136 -2199 -3118 -727 -1246 -1162
--2345 -1273 -3221 -65 -519 -30 -906 132 -1429 123 -399 306 -782 548 -1145
-160 -240 301 -412 509 -621 311 -311 572 -504 926 -683 381 -194 749 -301
-1200 -352 139 -16 536 -16 680 0 842 92 1553 444 2160 1068 559 574 966 1348
-1130 2147 69 335 69 750 0 1175 -232 1428 -1308 3444 -3004 5626 -240 310
--614 765 -627 765 -3 0 -86 -96 -182 -212z"/>
+<g fill="#555" stroke="none">
+<path d="M63.3 115.3 c-8.1 -9.8 -16.3 -21.4 -22.0 -31.2 -7.3 -12.5 -11.6
+-23.5 -12.7 -32.2 -0.7 -5.2 -0.3 -9.1 1.3 -14.3 1.2 -4.0 3.1 -7.8 5.5 -11.5
+1.6 -2.4 3.0 -4.1 5.1 -6.2 3.1 -3.1 5.7 -5.0 9.3 -6.8 3.8 -1.9 7.5 -3.0
+12.0 -3.5 1.4 -0.2 5.4 -0.2 6.8 0 8.4 0.9 15.5 4.4 21.6 10.7 5.6 5.7 9.7 13.5
+11.3 21.5 0.7 3.4 0.7 7.5 0 11.8 -2.3 14.3 -13.1 34.4 -30.0 56.3 -2.4 3.1
+-6.1 7.7 -6.3 7.7 0 0 -0.9 -1.0 -1.8 -2.1z"/>
 </g>
 </svg>