All three fixes applied:

1. **See-through blocks fixed** — The face culling logic was broken with a convoluted condition that sometimes rendered inner faces and skipped outer ones. Replaced with clean logic: only render a face if the neighbor is AIR (or WATER for non-water blocks).

2. **No-clip fixed** — Replaced the collision system with proper AABB overlap testing. It now correctly computes the min/max block coordinates the player bounding box overlaps and does precise box-vs-box intersection, plus handles head bumps when jumping.

3. **Vibrant colors** — Boosted all block colors to more saturated values, increased tone mapping exposure from 1.0→1.4, bumped ambient light from 0.8→1.0, and sun light from 1.5→1.8.

**Next Ideas:**
1. **Block breaking animation** — Add a crack overlay that progresses as you hold the break button, instead of instant break
2. **Biome variety** — Add desert, tundra, and jungle biomes with unique block palettes and tree types

**Ready to level up your game? Pick one and let's build it!**