Move brown/yellow to the end of the list to prevent red/brown problems early

in the game.

xtrn/uberblox/game.js

@@ -84,8 +84,8 @@ function blox()
 {
 	const columns=20;
 	const rows=11;
-	const bg=[BG_GREEN,BG_BLUE,BG_RED,BG_BROWN,BG_MAGENTA,LIGHTGRAY];
-	const fg=[LIGHTGREEN,LIGHTBLUE,LIGHTRED,YELLOW,LIGHTMAGENTA,WHITE];
+	const bg=[BG_GREEN,  BG_BLUE,  BG_RED,  BG_MAGENTA,  LIGHTGRAY,BG_BROWN];
+	const fg=[LIGHTGREEN,LIGHTBLUE,LIGHTRED,LIGHTMAGENTA,WHITE,    YELLOW];
 
 	var level;
 	var points;