fix: correct Pokemon Red/Blue CGB palette RGB555 values

Updated Pokemon Red and Blue DMG colorization palettes to match the
accurate RGB555 values from the Game Boy Color boot ROM. The previous
values were incorrect, resulting in wrong colors.

Changes:
- Pokemon Red: Fixed background reds and object lime green colors
- Pokemon Blue: Fixed background blues (was showing red!) and object red colors

Source: Bulbapedia CGB palette data, converted from RGB888 to RGB555
using the formula: (R>>3) | (G>>3)<<5 | (B>>3)<<10

Author: claude

src/Ppu/DmgPalettes.php

@@ -69,17 +69,17 @@ class DmgPalettes
         // Pokemon Red - Red tones with green sprites
         'pokemon_red' => [
             'name' => 'Pokemon Red',
-            'bg' => [0x7FFF, 0x3FE6, 0x12A4, 0x0000],    // White, Light Red, Red, Black
-            'obj0' => [0x7FFF, 0x3E1F, 0x0140, 0x0000],  // White, Light Green, Green, Black
-            'obj1' => [0x7FFF, 0x3FE6, 0x12A4, 0x0000],  // White, Light Red, Red, Black
+            'bg' => [0x7FFF, 0x421F, 0x1CF2, 0x0000],    // White, Light Red, Red, Black
+            'obj0' => [0x7FFF, 0x1BEF, 0x0200, 0x0000],  // White, Lime Green, Dark Green, Black
+            'obj1' => [0x7FFF, 0x421F, 0x1CF2, 0x0000],  // White, Light Red, Red, Black
         ],
 
-        // Pokemon Blue - Blue tones with complementary sprites
+        // Pokemon Blue - Blue tones with red sprites
         'pokemon_blue' => [
             'name' => 'Pokemon Blue',
-            'bg' => [0x7FFF, 0x329F, 0x001F, 0x0000],    // White, Light Blue, Blue, Black
-            'obj0' => [0x7FFF, 0x3E1F, 0x0140, 0x0000],  // White, Light Green, Green, Black
-            'obj1' => [0x7FFF, 0x329F, 0x001F, 0x0000],  // White, Light Blue, Blue, Black
+            'bg' => [0x7FFF, 0x7C8C, 0x7C00, 0x0000],    // White, Light Blue, Blue, Black
+            'obj0' => [0x7FFF, 0x421F, 0x1CF2, 0x0000],  // White, Light Red, Red, Black
+            'obj1' => [0x7FFF, 0x7C8C, 0x7C00, 0x0000],  // White, Light Blue, Blue, Black
         ],
 
         // Pokemon Yellow - Yellow tones