diff --git a/src/app/components/previews/BiomeSourcePreview.tsx b/src/app/components/previews/BiomeSourcePreview.tsx
index 83c9935e..eab95ad9 100644
--- a/src/app/components/previews/BiomeSourcePreview.tsx
+++ b/src/app/components/previews/BiomeSourcePreview.tsx
@@ -46,8 +46,8 @@ export const BiomeSourcePreview = ({ data, shown }: BiomeSourceProps) => {
 	})
 
 	useOnDrag(canvas.current, (dx, dy) => {
-		const x = dx * canvas.current.width / canvas.current.clientWidth
-		const y = dy * canvas.current.height / canvas.current.clientHeight
+		const x = dx * 200 / canvas.current.clientWidth
+		const y = dy * 200 / canvas.current.clientHeight
 		offset.current = [offset.current[0] + x, offset.current[1] + y]
 		redraw.current()
 	})
diff --git a/src/app/previews/BiomeSource.ts b/src/app/previews/BiomeSource.ts
index 72aa0528..95d504a7 100644
--- a/src/app/previews/BiomeSource.ts
+++ b/src/app/previews/BiomeSource.ts
@@ -119,7 +119,7 @@ export function getBiomeColor(biome: string, biomeColors: BiomeColors) {
 	if (!biome) {
 		return [128, 128, 128]
 	}
-	const color = biomeColors[biome]
+	const color = biomeColors[biome] ?? VanillaColors[biome]
 	if (color === undefined) {
 		return stringToColor(biome)
 	}
@@ -150,3 +150,85 @@ function closestBiome(noise: NormalNoise[], biomes: any[], x: number, y: number)
 function fitness(a: any, b: any) {
 	return (a.altitude - b.altitude) * (a.altitude - b.altitude) + (a.temperature - b.temperature) * (a.temperature - b.temperature) + (a.humidity - b.humidity) * (a.humidity - b.humidity) + (a.weirdness - b.weirdness) * (a.weirdness - b.weirdness) + (a.offset - b.offset) * (a.offset - b.offset)
 }
+
+const VanillaColors: Record<string, [number, number, number]> = {
+	'minecraft:badlands': [217,69,21],
+	'minecraft:badlands_plateau': [202,140,101],
+	'minecraft:bamboo_jungle': [118,142,20],
+	'minecraft:bamboo_jungle_hills': [59,71,10],
+	'minecraft:basalt_deltas': [64,54,54],
+	'minecraft:beach': [250,222,85],
+	'minecraft:birch_forest': [48,116,68],
+	'minecraft:birch_forest_hills': [31,95,50],
+	'minecraft:cold_ocean': [32,32,112],
+	'minecraft:crimson_forest': [221,8,8],
+	'minecraft:dark_forest': [64,81,26],
+	'minecraft:dark_forest_hills': [104,121,66],
+	'minecraft:deep_cold_ocean': [32,32,56],
+	'minecraft:deep_frozen_ocean': [64,64,144],
+	'minecraft:deep_lukewarm_ocean': [0,0,64],
+	'minecraft:deep_ocean': [0,0,48],
+	'minecraft:deep_warm_ocean': [0,0,80],
+	'minecraft:desert': [250,148,24],
+	'minecraft:desert_hills': [210,95,18],
+	'minecraft:desert_lakes': [255,188,64],
+	'minecraft:end_barrens': [128,128,255],
+	'minecraft:end_highlands': [128,128,255],
+	'minecraft:end_midlands': [128,128,255],
+	'minecraft:eroded_badlands': [255,109,61],
+	'minecraft:flower_forest': [45,142,73],
+	'minecraft:forest': [5,102,33],
+	'minecraft:frozen_ocean': [112,112,214],
+	'minecraft:frozen_river': [160,160,255],
+	'minecraft:giant_spruce_taiga': [129,142,121],
+	'minecraft:giant_spruce_taiga_hills': [109,119,102],
+	'minecraft:giant_tree_taiga': [89,102,81],
+	'minecraft:giant_tree_taiga_hills': [69,79,62],
+	'minecraft:gravelly_mountains': [136,136,136],
+	'minecraft:ice_spikes': [180,220,220],
+	'minecraft:jungle': [83,123,9],
+	'minecraft:jungle_edge': [98,139,23],
+	'minecraft:jungle_hills': [44,66,5],
+	'minecraft:lukewarm_ocean': [0,0,144],
+	'minecraft:modified_badlands_plateau': [242,180,141],
+	'minecraft:modified_gravelly_mountains': [120,152,120],
+	'minecraft:modified_jungle': [123,163,49],
+	'minecraft:modified_jungle_edge': [138,179,63],
+	'minecraft:modified_wooded_badlands_plateau': [216,191,141],
+	'minecraft:mountain_edge': [114,120,154],
+	'minecraft:mountains': [96,96,96],
+	'minecraft:mushroom_field_shore': [160,0,255],
+	'minecraft:mushroom_fields': [255,0,255],
+	'minecraft:nether_wastes': [191,59,59],
+	'minecraft:ocean': [0,0,112],
+	'minecraft:plains': [141,179,96],
+	'minecraft:river': [0,0,255],
+	'minecraft:savanna': [189,178,95],
+	'minecraft:savanna_plateau': [167,157,100],
+	'minecraft:shattered_savanna': [229,218,135],
+	'minecraft:shattered_savanna_plateau': [207,197,140],
+	'minecraft:small_end_islands': [128,128,255],
+	'minecraft:snowy_beach': [250,240,192],
+	'minecraft:snowy_mountains': [160,160,160],
+	'minecraft:snowy_taiga': [49,85,74],
+	'minecraft:snowy_taiga_hills': [36,63,54],
+	'minecraft:snowy_taiga_mountains': [89,125,114],
+	'minecraft:snowy_tundra': [255,255,255],
+	'minecraft:soul_sand_valley': [94,56,48],
+	'minecraft:stone_shore': [162,162,132],
+	'minecraft:sunflower_plains': [181,219,136],
+	'minecraft:swamp': [7,249,178],
+	'minecraft:swamp_hills': [47,255,218],
+	'minecraft:taiga': [11,102,89],
+	'minecraft:taiga_hills': [22,57,51],
+	'minecraft:taiga_mountains': [51,142,129],
+	'minecraft:tall_birch_forest': [88,156,108],
+	'minecraft:tall_birch_hills': [71,135,90],
+	'minecraft:the_end': [128,128,255],
+	'minecraft:the_void': [0,0,0],
+	'minecraft:warm_ocean': [0,0,172],
+	'minecraft:warped_forest': [73,144,123],
+	'minecraft:wooded_badlands_plateau': [176,151,101],
+	'minecraft:wooded_hills': [34,85,28],
+	'minecraft:wooded_mountains': [80,112,80],
+}