Fixed alpha support, which was not being saved and restored to/from the settings file. Reported by shimmythejj.
Made default alpha 0.1 (10%) for upperHalfColor, lowerHalfColor and azimuthColor. Suggested by overloadut, and it really makes it less jarring, as a default. Complaints from overloadut and shimmythejj's viewers about the lines dropped to pretty much zero.
Fixed the "Reset" button, which wasn't updating the hud to the reset values, when pressed.
Fixed small mistake when setting IChanged.
Change missed in the last changelog: Moved the default window positions to be more central, as it was easy to accidentally click on time acceleration when moving it (I did it, and kofeyh did it while livestreaming). It also looks better, anyway.