throw on nsfw palette

frontend/src/routes/+page.svelte

@@ -97,12 +97,16 @@
 						$loadingState = data.success ? 'Generating' : 'Error';
 						break;
 					case 'process_completed':
-						$loadingState = data.success ? 'Complete' : 'Error';
-						const images = await extractColorsImages(data.output.data[0], _prompt);
-						savePaletteDB({
-							prompt: _prompt,
-							images
-						});
+						try {
+							const images = await extractColorsImages(data.output.data[0], _prompt);
+							savePaletteDB({
+								prompt: _prompt,
+								images
+							});
+							$loadingState = data.success ? 'Complete' : 'Error';
+						} catch (e) {
+							$loadingState = e.message;
+						}
 						websocket.close();
 						$isLoading = false;
 						return;
@@ -118,9 +122,18 @@
 		};
 	}
 	async function extractColorsImages(images: string[], _prompt: string): Promise<ColorsImage[]> {
+		const nsfwColors = ['#040404', '#b7b7b7', '#565656', '#747474', '#6c6c6c'];
 		const colorImages = [];
 		for (const base64img of images) {
 			const { colors, imgBlob } = await extractPalette(base64img);
+			if (
+				!colors
+					.map((color) => color.formatHex().toUpperCase())
+					.every((c) => nsfwColors.includes(c.toUpperCase()))
+			) {
+				console.error('Possible NSFW image');
+				throw new Error('Possible NSFW image');
+			}
 			const url = await uploadImage(imgBlob, _prompt);
 			const colorsImage: ColorsImage = {
 				colors,