I FINALLY FIXED IT !!!

gb-emu/src/debug.rs

@@ -98,6 +98,7 @@ impl Debugger {
                 }
             } else {
                 println!("Invalid command");
+                self.step();
                 return;
             }
         }

lib/src/processor/memory/mmio/gpu/types.rs

@@ -135,8 +135,8 @@ impl Colour {
     fn as_bits(&self) -> u8 {
         match self {
             Colour::White => 0b00,
-            Colour::LightGray => 0b10,
-            Colour::DarkGray => 0b01,
+            Colour::LightGray => 0b01,
+            Colour::DarkGray => 0b10,
             Colour::Black => 0b11,
             Colour::Error => 0b00,
         }