diff --git a/chunk_render.go b/chunk_render.go
index 0fbcc80..7349c13 100644
--- a/chunk_render.go
+++ b/chunk_render.go
@@ -22,19 +22,21 @@ func Chunk2Img(c *chunk.Chunk) *image.RGBA {
 			col := color.RGBA{0, 0, 0, 255}
 
 			block_rid := c.Block(x, height, z, 0)
-			b, found := world.BlockByRuntimeID(block_rid)
-			if found {
-				col = b.Color()
-			}
-
-			/*
-				if col.R == 255 && col.B == 255 {
-					name, nbt := b.EncodeBlock()
-					fmt.Printf("unknown color %s %s %s\n", reflect.TypeOf(b), name, nbt)
-					b.Color()
+			if block_rid == 0 && height == 0 { // void
+				col = color.RGBA{0, 0, 0, 255}
+			} else {
+				b, found := world.BlockByRuntimeID(block_rid)
+				if found {
+					col = b.Color()
 				}
-			*/
-
+				/*
+					if col.R == 255 && col.B == 255 {
+						name, nbt := b.EncodeBlock()
+						fmt.Printf("unknown color %d  %s %s %s\n", block_rid, reflect.TypeOf(b), name, nbt)
+						b.Color()
+					}
+				*/
+			}
 			if height_liquid > height {
 				bw := &block.Water{}
 				wcol := bw.Color()
diff --git a/main.go b/main.go
index 7d8f939..e40f394 100644
--- a/main.go
+++ b/main.go
@@ -26,6 +26,7 @@ const TOKEN_FILE = "token.json"
 var G_src oauth2.TokenSource
 var G_xbl_token *auth.XBLToken
 var G_debug bool
+var G_preload_packs bool
 var G_exit []func() = []func(){}
 
 var pool = packet.NewPool()
@@ -104,10 +105,13 @@ func main() {
 	ctx, cancel := context.WithCancel(context.Background())
 
 	flag.BoolVar(&G_debug, "debug", false, "debug mode")
+	flag.BoolVar(&G_preload_packs, "preload", false, "preload resourcepacks for proxy")
 	enable_dns := flag.Bool("dns", false, "enable dns server for consoles")
+
 	subcommands.Register(subcommands.HelpCommand(), "")
 	subcommands.ImportantFlag("debug")
 	subcommands.ImportantFlag("dns")
+	subcommands.ImportantFlag("preload")
 	subcommands.HelpCommand()
 
 	{ // interactive input
diff --git a/utils.go b/utils.go
index 9b4a25d..7765fb7 100644
--- a/utils.go
+++ b/utils.go
@@ -16,6 +16,7 @@ import (
 	"github.com/sandertv/gophertunnel/minecraft/auth"
 	"github.com/sandertv/gophertunnel/minecraft/protocol/login"
 	"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
+	"github.com/sandertv/gophertunnel/minecraft/resource"
 	"golang.org/x/oauth2"
 )
 
@@ -152,9 +153,22 @@ func spawn_conn(ctx context.Context, clientConn *minecraft.Conn, serverConn *min
 }
 
 func create_proxy(ctx context.Context, server_address string) (l *minecraft.Listener, clientConn, serverConn *minecraft.Conn, err error) {
+	var packs []*resource.Pack
+	if G_preload_packs {
+		fmt.Println("Preloading resourcepacks")
+		serverConn, err = connect_server(ctx, server_address, nil)
+		if err != nil {
+			return nil, nil, nil, fmt.Errorf("failed to connect to %s: %s", server_address, err)
+		}
+		serverConn.Close()
+		packs = serverConn.ResourcePacks()
+		fmt.Printf("%d packs loaded\n", len(packs))
+	}
+
 	_status := minecraft.NewStatusProvider("Server")
 	listener, err := minecraft.ListenConfig{
 		StatusProvider: _status,
+		ResourcePacks:  packs,
 	}.Listen("raknet", ":19132")
 	if err != nil {
 		return nil, nil, nil, err