diff --git a/src/styles.cr b/src/styles.cr
new file mode 100644
index 0000000..e4b8432
--- /dev/null
+++ b/src/styles.cr
@@ -0,0 +1,29 @@
+module Tartrazine
+  class Style
+    # These properties are tri-state.
+    # true means it's set
+    # false means it's not set
+    # nil means inherit from parent style
+    property bold : Bool?
+    property nobold : Bool?
+    property italic : Bool?
+    property notalic : Bool?
+    property underline : Bool?
+
+    # These properties are either set or nil
+    # (inherit from parent style)
+    property background : String?
+    property border : String?
+    property color : String?
+  end
+
+  class Theme
+    property name : String = ""
+
+    styles = Hash{String => Style}
+
+    # Get the style for a token.
+    def style(token)
+    end
+  end
+end