Mega Man's alternate color swaps are all taken from possible weapon colors used in previous Mega Man games:
• Red and White - Rush Coil from Mega Man 3
• Green and White - Leaf Shield from Mega Man 2
• Gold and Brown - Metal Blade from Mega Man 2
• Blue and White - Air Shooter from Mega Man 2
• Green and Yellow - Slash Claw from Mega Man 7
• Red and Black - Flame Blast from Mega Man 6
• Yellow and Black - Top Spin from Mega Man 3
Contributed by noobheadz