diff --git a/code/datums/brain_damage/mild.dm b/code/datums/brain_damage/mild.dm
index 87e6ebe0b22..2b9c73084d8 100644
--- a/code/datums/brain_damage/mild.dm
+++ b/code/datums/brain_damage/mild.dm
@@ -265,3 +265,18 @@
 			speak_dejavu += speech_args[SPEECH_MESSAGE]
 	else
 		speak_dejavu += speech_args[SPEECH_MESSAGE]
+
+/datum/brain_trauma/mild/color_blindness
+	name = "Achromatopsia"
+	desc = "Patient's occipital lobe is unable to recognize and interpret color, rendering the patient completely colorblind."
+	scan_desc = "colorblindness"
+	gain_text = span_warning("The world around you seems to lose its color.")
+	lose_text = span_notice("The world feels bright and colorful again.")
+
+/datum/brain_trauma/mild/color_blindness/on_gain()
+	owner.add_client_colour(/datum/client_colour/monochrome/colorblind)
+	return ..()
+
+/datum/brain_trauma/mild/color_blindness/on_lose(silent)
+	owner.remove_client_colour(/datum/client_colour/monochrome/colorblind)
+	return ..()
diff --git a/code/modules/client/client_colour.dm b/code/modules/client/client_colour.dm
index 26ab9e850b6..d45bb8db4fc 100644
--- a/code/modules/client/client_colour.dm
+++ b/code/modules/client/client_colour.dm
@@ -198,6 +198,9 @@
 	fade_in = 20
 	fade_out = 20
 
+/datum/client_colour/monochrome/colorblind
+	priority = PRIORITY_HIGH
+
 /datum/client_colour/monochrome/trance
 	priority = PRIORITY_NORMAL