Enha: style update

models/main.go

@@ -12,16 +12,16 @@ import (
 type WordColor string
 
 const (
-	WordColorWhite  = "white"
+	WordColorWhite  = "amber"
 	WordColorBlue   = "blue"
 	WordColorRed    = "red"
 	WordColorBlack  = "black"
-	WordColorUknown = "beige"
+	WordColorUknown = "stone" // beige
 )
 
 func StrToWordColor(s string) WordColor {
 	switch s {
-	case "white":
+	case "amber", "white":
 		return WordColorWhite
 	case "blue":
 		return WordColorBlue