RGB blocks

Major perceptual palette refinement update.

• Expanded the palette to over 16,600 color blocks
• Improved tonal continuity and perceptual color flow
• Expanded bridge colors and intermediate tones
• Enhanced grayscale progression and smooth transitions
• Increased overall palette density for architectural building workflows
• Refined color organization for easier navigation and visual consistency

RGB Blocks now provides a more natural and human-oriented large-scale color palette while preserving full compatibility with existing building workflows.