Add background color locale keys

src/locales/de.json

@@ -32,7 +32,8 @@
     "softness": "Weichheit",
     "glow": "Leuchten",
     "glow-width": "Leuchtbreite",
-    "max-line": "Max. Linie"
+    "max-line": "Max. Linie",
+    "color-bg": "Hintergrund"
   },
   "text": {
     "password": "Passwort",

src/locales/en.json

@@ -32,7 +32,8 @@
     "softness": "Softness",
     "glow": "Glow",
     "glow-width": "Glow Width",
-    "max-line": "Max Line"
+    "max-line": "Max Line",
+    "color-bg": "Background"
   },
   "text": {
     "password": "password",

src/locales/es.json

@@ -32,7 +32,8 @@
     "softness": "Suavidad",
     "glow": "Resplandor",
     "glow-width": "Ancho del halo",
-    "max-line": "Línea máx."
+    "max-line": "Línea máx.",
+    "color-bg": "Fondo"
   },
   "text": {
     "password": "contraseña",

src/locales/fr.json

@@ -32,7 +32,8 @@
     "softness": "Douceur",
     "glow": "Lueur",
     "glow-width": "Largeur du halo",
-    "max-line": "Ligne max"
+    "max-line": "Ligne max",
+    "color-bg": "Arrière-plan"
   },
   "text": {
     "password": "mot de passe",

src/locales/ru.json

@@ -32,7 +32,8 @@
     "softness": "Мягкость",
     "glow": "Свечение",
     "glow-width": "Ширина свечения",
-    "max-line": "Макс. линия"
+    "max-line": "Макс. линия",
+    "color-bg": "Фон"
   },
   "text": {
     "password": "пароль",