[MIRROR] Color standardization, vars moved, and signals (#194)

* Color standardization, vars moved, and signals (#52574)

    Defined all the existing light_color values.
    Moved their definitions to colors.dm
    Made white the default color. It was so already, but that was very obscured.
    Moved the atom light-related variables to the atom definition.
    Wrapped changes to variables such as light_color into procs that report the event through signals.
    Moved the light_on variable to the atom level, also adding a signal for its changing, to represent toggling lights.
    Cleaned up a little bit of code in where new variables were defined before redefinitions.

This is all atomization to reduce changes in #52413
None of this affect gameplay at all, it's all code cleaning and refactoring.

There's more colors to standardize, a search for color = will find lots of targets, and I see little need to have both the LIGHT_COLOR and COLOR patterns, but I don't want to make this PR bigger than it already is.

* Color standardization, vars moved, and signals

Co-authored-by: Rohesie <rohesie@gmail.com>

code/modules/cargo/bounty_console.dm

@@ -5,7 +5,7 @@
 	desc = "Used to check and claim bounties offered by Nanotrasen"
 	icon_screen = "bounty"
 	circuit = /obj/item/circuitboard/computer/bounty
-	light_color = "#E2853D"//orange
+	light_color = COLOR_BRIGHT_ORANGE
 	var/printer_ready = 0 //cooldown var
 	var/static/datum/bank_account/cargocash
 

code/modules/cargo/console.dm

@@ -3,6 +3,7 @@
 	desc = "Used to order supplies, approve requests, and control the shuttle."
 	icon_screen = "supply"
 	circuit = /obj/item/circuitboard/computer/cargo
+	light_color = COLOR_BRIGHT_ORANGE
 
 	var/requestonly = FALSE
 	var/contraband = FALSE
@@ -17,7 +18,6 @@
 	var/message_cooldown
 	var/list/loaded_coupons
 
-	light_color = "#E2853D"//orange
 
 /obj/machinery/computer/cargo/request
 	name = "supply request console"