Calcite pool: blue water in sulfur caves

In sulfur caves there are solid blocks of two distinct colors, red and yellow, but water of merely green. Adding blue water will significantly increase sulfur caves' color richness.

I suggest two alternative ideas.

1. If calcite is approved to appear in sulfur caves, add a modified sulfur cave biome (blue water) that has more calcite than sulfur and spawns calcite pools instead of sulfur pools. This modified biome should appear frequently to create the scenery of altering between green and blue.

2. Make the water color in sulfur caves changes through time and position between green and blue.

Average cave biomes are generally single-color-themed (warm or cold). Adding blue to sulfur caves will make them actually unique.