fallback to minecraft:plains for unknown biome when querying biome tint

Author: Querz

src/main/java/net/querz/mcaselector/version/mapping/color/ColorMapping.java

@@ -142,7 +142,7 @@ public BlockColor getColor(String block, String biome, BitSet state) {
 					return b.getColor(state);
 				}
 			}
-			return missing.getColor(null);
+			return null;
 		}
 	}
 

src/main/java/net/querz/mcaselector/version/mapping/generator/ColorConfig.java

@@ -76,7 +76,8 @@ public BlockColor getColor(String name, String biome, CompoundTag tag) {
 		BitSet blockState = states.getState(tag);
 		BlockColor blockColor = colors.getBlockColor(name, blockState);
 		if ((blockColor.properties & BlockColor.TINTED) > 0) {
-			return tintCache.getColor(name, biome, blockState);
+			BlockColor tinted = tintCache.getColor(name, biome, blockState);
+			return tinted == null ? tintCache.getColor(name, "minecraft:plains", null) : tinted;
 		}
 		return blockColor;
 	}