diff --git a/src/colorist/model/background_bright_color.py b/src/colorist/model/background_bright_color.py
index 87c435aa..4adcee40 100644
--- a/src/colorist/model/background_bright_color.py
+++ b/src/colorist/model/background_bright_color.py
@@ -4,6 +4,8 @@
 
 @unique
 class BgBrightColor(Enum):
+    """Options for bright background colors."""
+    
     GREEN   = "\033[102m"
     YELLOW  = "\033[103m"
     RED     = "\033[101m"
diff --git a/src/colorist/model/background_color.py b/src/colorist/model/background_color.py
index e3e31c20..0d3e5164 100644
--- a/src/colorist/model/background_color.py
+++ b/src/colorist/model/background_color.py
@@ -3,6 +3,8 @@
 
 @unique
 class BgColor(Enum):
+    """Options for standard background colors."""
+
     GREEN   = "\033[42m"
     YELLOW  = "\033[43m"
     RED     = "\033[41m"
diff --git a/src/colorist/model/bright_color.py b/src/colorist/model/bright_color.py
index 3e777957..ab5ca77b 100644
--- a/src/colorist/model/bright_color.py
+++ b/src/colorist/model/bright_color.py
@@ -3,6 +3,8 @@
 
 @unique
 class BrightColor(Enum):
+    """Options for bright colors."""
+
     GREEN   = "\033[92m"
     YELLOW  = "\033[93m"
     RED     = "\033[91m"
diff --git a/src/colorist/model/color.py b/src/colorist/model/color.py
index 29312270..6058bd80 100644
--- a/src/colorist/model/color.py
+++ b/src/colorist/model/color.py
@@ -2,6 +2,8 @@
 
 @unique
 class Color(Enum):
+    """Options for standard colors."""
+
     GREEN   = "\033[32m"
     YELLOW  = "\033[33m"
     RED     = "\033[31m"
diff --git a/src/colorist/model/effect.py b/src/colorist/model/effect.py
index a09bbe2f..76c91a7f 100644
--- a/src/colorist/model/effect.py
+++ b/src/colorist/model/effect.py
@@ -3,6 +3,8 @@
 
 @unique
 class Effect(Enum):
+    """Options for effects and formatting."""
+
     BOLD      = "\033[1m"
     DIM       = "\033[2m"
     UNDERLINE = "\033[4m"