preview images updated

client/homebrew/editor/metadataEditor/metadataEditor.jsx

@@ -186,7 +186,7 @@ const MetadataEditor = createClass({
 					<img src={`/themes/${theme.renderer}/${theme.path}/dropdownTexture.png`}/>
 					<div className='preview'>
 						<h6>{`${theme.name}`} preview</h6>
-						<img src={`/themes/${theme.renderer}/${theme.path}/dropdownPreview.jpg`}/>
+						<img src={`/themes/${theme.renderer}/${theme.path}/dropdownPreview.png`}/>
 					</div>
 				</div>;
 			});

scripts/buildHomebrew.js

@@ -72,7 +72,7 @@ fs.emptyDirSync('./build');
 		themeData.path = dir;
 		themes.V3[dir] = (themeData);
 		fs.copy(`./themes/V3/${dir}/dropdownTexture.png`, `./build/themes/V3/${dir}/dropdownTexture.png`);
-		fs.copy(`./themes/V3/${dir}/dropdownPreview.jpg`, `./build/themes/V3/${dir}/dropdownPreview.jpg`);
+		fs.copy(`./themes/V3/${dir}/dropdownPreview.png`, `./build/themes/V3/${dir}/dropdownPreview.png`);
 		const src = `./themes/V3/${dir}/style.less`;
 	  ((outputDirectory)=>{
 			less.render(fs.readFileSync(src).toString(), {