diff --git a/src/powder.c b/src/powder.c
index f83c79008..154fbf20e 100644
--- a/src/powder.c
+++ b/src/powder.c
@@ -2483,8 +2483,9 @@ void create_box(int x1, int y1, int x2, int y2, int c)
 			create_parts(i, j, 0, 0, c);
 }
 
-int flood_parts(int x, int y, int c, int cm, int bm)
+int flood_parts(int x, int y, int fullc, int cm, int bm)
 {
+	int c = fullc&0xFF;
 	int x1, x2, dy = (c<PT_NUM)?1:CELL;
 	int co = c;
 	if (cm==PT_INST&&co==PT_SPRK)
@@ -2544,10 +2545,10 @@ int flood_parts(int x, int y, int c, int cm, int bm)
 	{
 		if (cm==PT_INST&&co==PT_SPRK)
 		{
-			if (create_part(-1,x, y, co)==-1)
+			if (create_part(-1,x, y, fullc)==-1)
 				return 0;
 		}
-		else if (!create_parts(x, y, 0, 0, co))
+		else if (!create_parts(x, y, 0, 0, fullc))
 			return 0;
 	}
 	// fill children
@@ -2556,7 +2557,7 @@ int flood_parts(int x, int y, int c, int cm, int bm)
 		if (y>=CELL+dy && x1==x2 &&
 		        ((pmap[y-1][x1-1]&0xFF)==PT_INST||(pmap[y-1][x1-1]&0xFF)==PT_SPRK) && ((pmap[y-1][x1]&0xFF)==PT_INST||(pmap[y-1][x1]&0xFF)==PT_SPRK) && ((pmap[y-1][x1+1]&0xFF)==PT_INST || (pmap[y-1][x1+1]&0xFF)==PT_SPRK) &&
 		        (pmap[y-2][x1-1]&0xFF)!=PT_INST && ((pmap[y-2][x1]&0xFF)==PT_INST ||(pmap[y-2][x1]&0xFF)==PT_SPRK) && (pmap[y-2][x1+1]&0xFF)!=PT_INST)
-			flood_parts(x1, y-2, co, cm, bm);
+			flood_parts(x1, y-2, fullc, cm, bm);
 		else if (y>=CELL+dy)
 			for (x=x1; x<=x2; x++)
 				if ((pmap[y-1][x]&0xFF)!=PT_SPRK)
@@ -2564,14 +2565,14 @@ int flood_parts(int x, int y, int c, int cm, int bm)
 					if (x==x1 || x==x2 || y>=YRES-CELL-1 ||
 					        (pmap[y-1][x-1]&0xFF)==PT_INST || (pmap[y-1][x+1]&0xFF)==PT_INST ||
 					        (pmap[y+1][x-1]&0xFF)==PT_INST || ((pmap[y+1][x]&0xFF)!=PT_INST&&(pmap[y+1][x]&0xFF)!=PT_SPRK) || (pmap[y+1][x+1]&0xFF)==PT_INST)
-						flood_parts(x, y-dy, co, cm, bm);
+						flood_parts(x, y-dy, fullc, cm, bm);
 
 				}
 
 		if (y<YRES-CELL-dy && x1==x2 &&
 		        ((pmap[y+1][x1-1]&0xFF)==PT_INST||(pmap[y+1][x1-1]&0xFF)==PT_SPRK) && ((pmap[y+1][x1]&0xFF)==PT_INST||(pmap[y+1][x1]&0xFF)==PT_SPRK) && ((pmap[y+1][x1+1]&0xFF)==PT_INST || (pmap[y+1][x1+1]&0xFF)==PT_SPRK) &&
 		        (pmap[y+2][x1-1]&0xFF)!=PT_INST && ((pmap[y+2][x1]&0xFF)==PT_INST ||(pmap[y+2][x1]&0xFF)==PT_SPRK) && (pmap[y+2][x1+1]&0xFF)!=PT_INST)
-			flood_parts(x1, y+2, co, cm, bm);
+			flood_parts(x1, y+2, fullc, cm, bm);
 		else if (y<YRES-CELL-dy)
 			for (x=x1; x<=x2; x++)
 				if ((pmap[y+1][x]&0xFF)!=PT_SPRK)
@@ -2579,7 +2580,7 @@ int flood_parts(int x, int y, int c, int cm, int bm)
 					if (x==x1 || x==x2 || y<0 ||
 					        (pmap[y+1][x-1]&0xFF)==PT_INST || (pmap[y+1][x+1]&0xFF)==PT_INST ||
 					        (pmap[y-1][x-1]&0xFF)==PT_INST || ((pmap[y-1][x]&0xFF)!=PT_INST&&(pmap[y-1][x]&0xFF)!=PT_SPRK) || (pmap[y-1][x+1]&0xFF)==PT_INST)
-						flood_parts(x, y+dy, co, cm, bm);
+						flood_parts(x, y+dy, fullc, cm, bm);
 
 				}
 	}
@@ -2588,12 +2589,12 @@ int flood_parts(int x, int y, int c, int cm, int bm)
 		if (y>=CELL+dy)
 			for (x=x1; x<=x2; x++)
 				if ((pmap[y-dy][x]&0xFF)==cm && bmap[(y-dy)/CELL][x/CELL]==bm)
-					if (!flood_parts(x, y-dy, co, cm, bm))
+					if (!flood_parts(x, y-dy, fullc, cm, bm))
 						return 0;
 		if (y<YRES-CELL-dy)
 			for (x=x1; x<=x2; x++)
 				if ((pmap[y+dy][x]&0xFF)==cm && bmap[(y+dy)/CELL][x/CELL]==bm)
-					if (!flood_parts(x, y+dy, co, cm, bm))
+					if (!flood_parts(x, y+dy, fullc, cm, bm))
 						return 0;
 	}
 	if (!(cm==PT_INST&&co==PT_SPRK))