Modified the latent problem.

Now Purple Gem get insanity effect. (This effect is disabled in dafault.)

When the special effect of green gem is disabled by the configuration, green gem shines like other gems.

Each gem's special effect is enabled/disabled.

1.Red gem and Blue gem, the effect (heating, cooling) in cave became stronger. The effect in ruins became more more stronger.
2.some bug fix. By the collision with other mods, cooling of blue gem and heating of red gem were impossible.

Preview icon image was changed.