How to Mod/Change GBA Color Palettes
This is specifically for changing the Color of Sprites in GBA games, this method can technically be used to change backgrounds and portraits as well. This isn't however a way to actually change the sprite itself.
Tools Needed
https://www.mediafire.com/file/67c9t1qn3rdaix8/GBA_Tutorial.rar/file
As for stuff like Sonic Battle you will have to get on your own.
Time Stamps
0:20 Intro/Quick Explanation of Tools
3:21 Step 1: Finding the Desired Sprite
6:37 Step 2: Noting the Code of the Sprite Colors
10:54 Step 3: Making our Custom Color
16:37 Step 4: Finding and Replacing the Code.
Extras
21:31 Finding hard to distinguish palettes (Palette + OAM Viewer)
27:24 Automatic Update with Viewer + Sprites with multiple appearances in Code.
30:27 Conclusion
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