If you like the style of Essentials' default infoboxes in battle but wish they weren't that boring white color, you may find this resource useful. Inspired largely by dark mode in various websites and apps like Discord, this takes those bland infoboxes and gives them a makeover.
If you download this and decide to use it, it is recommended that you follow these instructions, otherwise you will end up with something nobody wants to see: dark text on a dark background.
Change the following lines in PokeBattle_SceneConstants to:
MESSAGE_BASE_COLOR = Color.new(255,255,255)
MESSAGE_SHADOW_COLOR = Color.new(107,107,107)
Change the following lines in PokeBattle_SceneElements to:
NAME_BASE_COLOR = Color.new(255,255,255)
NAME_SHADOW_COLOR = Color.new(107,107,107)
MALE_BASE_COLOR = Color.new(0,198,255)
MALE_SHADOW_COLOR = NAME_SHADOW_COLOR
FEMALE_BASE_COLOR = Color.new(248,88,40)
FEMALE_SHADOW_COLOR = NAME_SHADOW_COLOR
Credit is not required but if you want to anyway: