RGB blocks

Palette Expansion Update

• Expanded the structured palette from 4,600+ colors to over 15,700+ colors
• Added large amounts of intermediate bridge colors
• Expanded pastel, muted, and neutral color coverage
• Improved gradient continuity across the palette
• Increased architectural and pixel-art usable color density
• Improved smooth color transition during palette browsing
• Maintained static full-block architecture for compatibility and stability
• Tested with NeoForge 26.1.2.41-beta