[tmux] Colorscheme changes

config/.config/powerline/colorschemes/tmux/default.json

@@ -0,0 +1,11 @@
+{
+	"groups": {
+		"background":           {"bg": "gray1"},
+		"active_window_status": {"bg": "gray1"},
+		"window_status":        {"bg": "gray1"},
+		"activity_status":      {"bg": "gray1"},
+		"bell_status":          {"bg": "gray1"},
+		"window":               {"bg": "gray1"},
+		"window:divider":       {"bg": "gray1"}
+	}
+}

config/.config/powerline/config.json

@@ -1,7 +0,0 @@
-{
-	"ext": {
-		"tmux": {
-			"colorscheme": "alpha"
-		}
-	}
-}