small logo fixes

.github/logos/mozilla.dark.svg

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 21.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 2000 571.9" style="enable-background:new 0 0 2000 571.9;" xml:space="preserve">
+<g>
+	<rect fill="white" y="0" width="2000" height="571.9"/>
+	<path fill="black" d="M1910.2,410.5c-3.9,1.1-7.2,1.7-10.5,1.7c-11.7,0-17.2-5-17.2-19.4V284.1c0-57.1-45.5-84.9-99.3-84.9
+		c-41.1,0-63.2,5-107.1,22.7l-9.8,57.6l57.1,6.1l8.1-28.2c11.7-6.1,23.3-7.2,38.3-7.2c40.5,0,41.1,30.5,41.1,56v8.3
+		c-12.8-1.7-27.2-2.2-41.1-2.2c-57.1,0-116.5,14.4-116.5,76c0,52.1,41,71.6,77.1,71.6c40.5,0,66-24.4,80.4-49.9
+		c3.3,30.5,21.6,49.9,54.9,49.9c15.5,0,31.6-4.4,44.9-11.7L1910.2,410.5z M1756.6,408.9c-21.6,0-29.4-12.8-29.4-28.9
+		c0-27.2,22.2-34.4,47.7-34.4c11.6,0,24.4,1.7,36.1,3.3C1809.3,390.6,1782.1,408.9,1756.6,408.9z M1660.5,72.7l-108.2,381.7h-70.5
+		L1590,72.7H1660.5z M1515.2,72.7L1407,454.4h-70.4l108.2-381.7H1515.2z M1214.8,204.2h74.9V294h-74.9V204.2z M1214.8,364.5h74.9
+		v89.9h-74.9V364.5z M1105.8,361.2l56.6,5.5l-15.5,87.7H928.3l-7.2-37.7l137.6-158.1h-78.2l-11.1,38.8l-51.6-5.6l8.9-87.7h219.7
+		l5.6,37.7L1013.2,400h81L1105.8,361.2z M747.3,199.2c-89.9,0-134.3,60.5-134.3,133.7c0,79.9,53.3,127,130.4,127
+		c79.9,0,137.6-50.5,137.6-130.4C881,259.6,837.1,199.2,747.3,199.2z M745.6,405c-38.8,0-58.8-33.3-58.8-76.6
+		c0-47.2,22.7-74.3,59.4-74.3c33.8,0,61,22.7,61,73.2C807.2,375,782.8,405,745.6,405z M548.6,400h33.3v54.4H477V313.5
+		c0-43.3-14.4-59.9-42.7-59.9c-34.4,0-48.3,24.4-48.3,59.4V400h33.3v54.4H314.5V313.5c0-43.3-14.4-59.9-42.7-59.9
+		c-34.4,0-48.3,24.4-48.3,59.4V400h47.7v54.4H118.7V400h33.3V258.5h-33.3v-54.4h104.8v37.7c15-26.6,41.1-42.7,76-42.7
+		c36.1,0,69.3,17.2,81.6,53.8c13.9-33.3,42.2-53.8,81.6-53.8c44.9,0,86,27.2,86,86.5V400z"/>
+</g>
+</svg>

.github/logos/mozilla.svg

@@ -2,12 +2,9 @@
 <!-- Generator: Adobe Illustrator 21.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
 <svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
 	 viewBox="0 0 2000 571.9" style="enable-background:new 0 0 2000 571.9;" xml:space="preserve">
-<style type="text/css">
-	.st0{fill:#FFFFFF;}
-</style>
 <g>
 	<rect y="0" width="2000" height="571.9"/>
-	<path class="st0" d="M1910.2,410.5c-3.9,1.1-7.2,1.7-10.5,1.7c-11.7,0-17.2-5-17.2-19.4V284.1c0-57.1-45.5-84.9-99.3-84.9
+	<path fill="white" d="M1910.2,410.5c-3.9,1.1-7.2,1.7-10.5,1.7c-11.7,0-17.2-5-17.2-19.4V284.1c0-57.1-45.5-84.9-99.3-84.9
 		c-41.1,0-63.2,5-107.1,22.7l-9.8,57.6l57.1,6.1l8.1-28.2c11.7-6.1,23.3-7.2,38.3-7.2c40.5,0,41.1,30.5,41.1,56v8.3
 		c-12.8-1.7-27.2-2.2-41.1-2.2c-57.1,0-116.5,14.4-116.5,76c0,52.1,41,71.6,77.1,71.6c40.5,0,66-24.4,80.4-49.9
 		c3.3,30.5,21.6,49.9,54.9,49.9c15.5,0,31.6-4.4,44.9-11.7L1910.2,410.5z M1756.6,408.9c-21.6,0-29.4-12.8-29.4-28.9

README.md

@@ -96,7 +96,11 @@ Development of `sqlite-vec` is supported by multiple generous sponsors! Mozilla
 is the main sponsor through the new Builders project.
 
 <p align="center">
-<img src="./.github/logos/mozilla.svg" width=400 />
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="./.github/logos/mozilla.dark.svg">
+    <source media="(prefers-color-scheme: light)" srcset="./.github/logos/mozilla.svg">
+    <img alt="Mozilla Builders logo" width=400>
+  </picture>
 </p>
 
 `sqlite-vec` is also sponsored by the following companies:
@@ -105,7 +109,7 @@ is the main sponsor through the new Builders project.
 <picture>
   <source media="(prefers-color-scheme: dark)" srcset="./.github/logos/flyio.dark.svg">
   <source media="(prefers-color-scheme: light)" srcset="./.github/logos/flyio.svg">
-  <img alt="logo of Fly.io" src="./.github/logos/flyio.svg" width="32%">
+  <img alt="Fly.io logo" src="./.github/logos/flyio.svg" width="32%">
 </picture>
 </a>
 
@@ -113,7 +117,7 @@ is the main sponsor through the new Builders project.
 <picture>
   <source media="(prefers-color-scheme: dark)" srcset="./.github/logos/turso.svg">
   <source media="(prefers-color-scheme: light)" srcset="./.github/logos/turso.svg">
-  <img alt="logo of Turso" src="./.github/logos/turso.svg" width="32%">
+  <img alt="Turso logo" src="./.github/logos/turso.svg" width="32%">
 </picture>
 </a>
 
@@ -121,7 +125,7 @@ is the main sponsor through the new Builders project.
 <picture>
   <source media="(prefers-color-scheme: dark)" srcset="./.github/logos/sqlitecloud.dark.svg">
   <source media="(prefers-color-scheme: light)" srcset="./.github/logos/sqlitecloud.svg">
-  <img alt="logo of SQLite Cloud" src="./.github/logos/flyio.svg" width="32%">
+  <img alt="SQLite Cloud logo" src="./.github/logos/flyio.svg" width="32%">
 </picture>
 </a>