add clean target, fixed mix up colors

Makefile

@@ -2,3 +2,8 @@
 all:
 	make -C src
 	mv src/golsky .
+
+.PHONY: clean
+clean:
+	make -C src clean
+	rm -f dump* rect*

src/theme.go

@@ -38,7 +38,7 @@ var THEMES = map[string]ThemeDef{
 	"standard": {
 		life: "e15f0b",
 		dead: "5a5a5a",
-		grid: "e13c0b",
+		grid: "808080",
 		old:  "7b5e4b",
 		age1: "735f52",
 		age2: "6c6059",
@@ -48,22 +48,22 @@ var THEMES = map[string]ThemeDef{
 	"dark": {
 		life: "c8c8c8",
 		dead: "000000",
-		grid: "ff1e1e",
-		old:  "522600",
-		age1: "422300",
-		age2: "2b1b00",
-		age3: "191100",
-		age4: "808080",
+		old:  "ff1e1e",
+		age1: "522600",
+		age2: "422300",
+		age3: "2b1b00",
+		age4: "191100",
+		grid: "808080",
 	},
 	"light": {
 		life: "000000",
 		dead: "c8c8c8",
-		grid: "ff1e1e",
-		old:  "ffc361",
-		age1: "ffd38c",
-		age2: "ffe3b5",
-		age3: "fff0e0",
-		age4: "808080",
+		old:  "ff1e1e",
+		age1: "ffc361",
+		age2: "ffd38c",
+		age3: "ffe3b5",
+		age4: "fff0e0",
+		grid: "808080",
 	},
 }