light.msstyles: Fill combo box background with white pixels.

dlls/light.msstyles/blue_combobutton.svg

 <?xml version="1.0" encoding="UTF-8"?>
-<svg id="bitmap:20-32" width="20" height="84" version="1.1" viewBox="0 0 5.2917 22.225" xmlns="http://www.w3.org/2000/svg" xmlns:cc="http://creativecommons.org/ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
+<svg id="bitmap:20-24" width="20" height="84" version="1.1" viewBox="0 0 5.2917 22.225" xmlns="http://www.w3.org/2000/svg" xmlns:cc="http://creativecommons.org/ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
  <metadata>
   <rdf:RDF>
    <cc:Work rdf:about="">
     <dc:format>image/svg+xml</dc:format>
     <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage"/>
-    <dc:title/>
    </cc:Work>
   </rdf:RDF>
  </metadata>
- <g stroke-width=".26458">
+ <rect y="-7e-5" width="5.2917" height="22.225" fill="#fff" stroke-width=".26458"/>
+ <g transform="translate(5.0184e-6 -6.4982e-5)" stroke-width=".26458">
   <rect x=".39687" y=".39687" width="4.4979" height="4.7625" rx=".52917" ry=".52917" fill="none" stroke="#aeaeae"/>
   <rect x=".39687" y="5.9531" width="4.4979" height="4.7625" rx=".52917" ry=".52917" fill="none" stroke="#3096fa"/>
   <rect x=".39687" y="11.509" width="4.4979" height="4.7625" rx=".52917" ry=".52917" fill="#2979ff" stroke="#2979ff"/>

dlls/light.msstyles/light.rc

@@ -398,7 +398,6 @@ BLUE_INI TEXTFILE
 "GlyphType = ImageGlyph\r\n"
 "GlyphImageFile = blue_combobutton_glyph.bmp\r\n"
 "GlyphTransparent = True\r\n"
-"Transparent = True\r\n"
 "TransitionDurations = 4, "
 "0, 100, 100, 100, "
 "100, 0, 100, 100, "