big upgrades to upgrade system

app/pylocal/util.py

@@ -0,0 +1,6 @@
+def hex_to_rgb(hex: str):
+    hex = hex.lstrip("#")
+    return tuple(int(hex[i:i+2], 16) for i in (0, 2, 4))
+
+def rgb_to_hex(r: int, g: int, b: int):
+    return f"#{int(r):0>2x}{int(g):0>2x}{int(b):0>2x}"