diff --git a/src/util/pattern.rs b/src/util/pattern.rs
index 7970092..a857bff 100644
--- a/src/util/pattern.rs
+++ b/src/util/pattern.rs
@@ -7,8 +7,8 @@ use std::{
 type ParseError = Box<dyn std::error::Error>;
 
 trait Pattern<'a> {
-    fn execute(&self, values: &'a mut [RawColor]);
-    fn parse(args: Vec<String>) -> Result<Self, ParseError>;
+    pub fn execute(&self, values: &'a mut [RawColor]);
+    pub fn parse(args: Vec<String>) -> Result<Self, ParseError>;
 }
 
 impl<'a> TryFrom<Vec<String>> for Box<dyn Pattern<'a>> {
@@ -48,7 +48,7 @@ impl<'a> Pattern<'a> for Value {
             if self.b.is_some() {
                 color[0] = self.b.unwrap();   
             }
-            values[i]
+            values[i] = color;
         }
     }
     fn parse(args: Vec<String>) -> Result<Self, ParseError> {
@@ -57,9 +57,9 @@ impl<'a> Pattern<'a> for Value {
         let param3 = args[2].parse::<u8>();
         if param1.is_ok() && param2.is_ok() && param3.is_ok() {
             Ok(Value{
-                r: param1.unwrap(),
-                g: param2.unwrap(),
-                b: param3.unwrap()
+                r: Some(param1.unwrap()),
+                g: Some(param2.unwrap()),
+                b: Some(param3.unwrap())
             })
         }
         else {
@@ -87,7 +87,7 @@ impl<'a> Pattern<'a> for Value {
                         })
                     }
                 },
-                Err() => Err() 
+                Err(e) => Err(e) 
             }
         }
     }