The first effect_handle value is reserved for level tinting. You can free this default effect with FreeColorEffect()
or ModifyColorEffect() if you wish. Once the default effect has been freed, it's number can be used for a new effect - this allows
you to have 31 custom effects.
White Effects
An RGB tint of '1 1 1' is white. If you added this with AddDynamicTint(),
you would see a yellowish tint. But, add this tint with group 1 or 2 of Cumulative Effects
Color effects are cumulative. In other words, color effects are combined when more than one effect is used at the same time.
Adding Color to the Screen
The maximum integer amount of color that can be added to the screen (with AddDynamicAdd()
or NewColorEffect()) is around 290. The real limit may be higher, but because 290 is opaque, you're not going to notice anything above that.