I've made custom palettes for the unused palettes 50-63. Here is what they are for:
PAL--IMG
50---02 Red Submarine Plants
51---05 Green Forest
52---05 Blue Forest
53---05 Golden Forest
54---05 Snowy Forest
55---07 Pink Hills, Green and Blue underground
56---12 Autumn Landscape
57---15 Brown Volcano, Green Plants
58---19 Red Cave Version
59---20 Blue/Purplish Wall
60---24 Red Cave Version
61---24 Green Cave Version 2
62---28 Green Grass, Violet Big Hill, Green Tall Hill
63---29 Blue and Orange Hills
Applying
This PATCH to your ROM gives you those palettes!!
EDIT: Here's a small video showing the palettes.
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NEW! SMW2 Yoshi's Island is done!
Last update: 2012-12-31