diff --git a/src/lib.rs b/src/lib.rs
index 1e1ba02..7def9fa 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -44,15 +44,15 @@ pub struct Card {
     pub name: String,
     pub layout: String,
     pub cmc: f32,
-    pub type_line: String,
+    pub type_line: Option<String>,
     pub oracle_text: Option<String>,
-    pub mana_cost: String,
+    pub mana_cost: Option<String>,
     pub power: Option<String>,
     pub toughness: Option<String>,
     pub loyalty: Option<String>,
     pub life_modifier: Option<String>,
     pub hand_modifier: Option<String>,
-    pub colors: Colors,
+    pub colors: Option<Colors>,
     pub color_indicator: Option<Colors>,
     pub color_identity: Colors,
     pub all_parts: Option<Vec<RelatedCard>>,
@@ -99,7 +99,7 @@ pub struct CardFace {
     pub type_line: String,
     pub oracle_text: Option<String>,
     pub mana_cost: String,
-    pub colors: Colors,
+    pub colors: Option<Colors>,
     pub color_indicator: Option<Colors>,
     pub power: Option<String>,
     pub toughness: Option<String>,