Vibrant Visuals: Block selection outline is not black underwater.

Steps to reproduce this issue:

1. Enter a world with Vibrant Visuals enabled.

2. Go to anywhere underwater.

3. Aim a block and look at its outline.

4. If it is still black, set time to midnight.

Expected result:

The outline would stay black.

Actual result:

The outline appears a little blue or white, making it inconsistent with when on the ground, and hard to recognise sometimes.