Major refactor to move away from glade file

src/libs/settings/options/theming.py

@@ -0,0 +1,14 @@
+# Python imports
+from dataclasses import dataclass
+
+# Lib imports
+
+# Application imports
+
+
+@dataclass
+class Theming:
+    transparency: int  = 64
+    success_color: str = "#88cc27"
+    warning_color: str = "#ffa800"
+    error_color: str   = "#ff0000"