The display name for BloomSetting::Dusk was unchanged in the rebranding
process, and still shows up as "Dusk" in the settings menu. Rename it to
"Dusklight" to bring it in line with the rebrand.
- Dim carousel arrows if there are no further options in that direction (closes#708)
This sets the color property constantly, not sure if that is a concern for perf (would imagine not since it already sets the rml to mValueElem every frame also?)