diff --git a/src/decorator.rs b/src/decorator.rs
index 7a144425..342a9adb 100644
--- a/src/decorator.rs
+++ b/src/decorator.rs
@@ -7,22 +7,6 @@ use rust_htslib::bam::ext::BamRecordExtensions;
 use std::cmp::Ordering;
 use std::fmt::Display;
 
-const NUC_COLOR: &str = "169,169,169";
-const M6A_COLOR: &str = "128,0,128";
-const CPG_COLOR: &str = "139,69,19";
-const LINKER_COLOR: &str = "147,112,219";
-const FIRE_COLORS: [(f32, &str); 9] = [
-    (1.0, "139,0,0"),
-    (2.0, "175,0,0"),
-    (3.0, "200,0,0"),
-    (4.0, "225,0,0"),
-    (5.0, "255,0,0"),
-    (10.0, "255,140,0"),
-    (25.0, "225,225,0"),
-    (100.0, LINKER_COLOR),
-    (200.0, NUC_COLOR),
-];
-
 pub fn get_fire_color(fdr: f32) -> &'static str {
     for (fdr_val, color) in FIRE_COLORS.iter() {
         if fdr <= *fdr_val {
diff --git a/src/fiber.rs b/src/fiber.rs
index c1b40636..514dae5c 100644
--- a/src/fiber.rs
+++ b/src/fiber.rs
@@ -1,3 +1,8 @@
+use crate::CPG_COLOR;
+use crate::LINKER_COLOR;
+use crate::M6A_COLOR;
+use crate::NUC_COLOR;
+
 use super::bamlift::*;
 use super::basemods::BaseMods;
 use super::bio_io::*;
@@ -396,7 +401,6 @@ impl FiberseqData {
     //  WRITE BED12 FUNCTIONS
     //
     pub fn write_msp(&self, reference: bool) -> String {
-        let color = "255,0,255";
         let (starts, _ends, lengths) = if reference {
             (
                 &self.msp.reference_starts,
@@ -406,11 +410,10 @@ impl FiberseqData {
         } else {
             (&self.msp.starts, &self.msp.ends, &self.msp.lengths)
         };
-        self.to_bed12(reference, starts, lengths, color)
+        self.to_bed12(reference, starts, lengths, LINKER_COLOR)
     }
 
     pub fn write_nuc(&self, reference: bool) -> String {
-        let color = "169,169,169";
         let (starts, _ends, lengths) = if reference {
             (
                 &self.nuc.reference_starts,
@@ -420,29 +423,27 @@ impl FiberseqData {
         } else {
             (&self.nuc.starts, &self.nuc.ends, &self.nuc.lengths)
         };
-        self.to_bed12(reference, starts, lengths, color)
+        self.to_bed12(reference, starts, lengths, NUC_COLOR)
     }
 
     pub fn write_m6a(&self, reference: bool) -> String {
-        let color = "128,0,128";
         let starts = if reference {
             &self.m6a.reference_starts
         } else {
             &self.m6a.starts
         };
         let lengths = vec![Some(1); starts.len()];
-        self.to_bed12(reference, starts, &lengths, color)
+        self.to_bed12(reference, starts, &lengths, M6A_COLOR)
     }
 
     pub fn write_cpg(&self, reference: bool) -> String {
-        let color = "139,69,19";
         let starts = if reference {
             &self.cpg.reference_starts
         } else {
             &self.cpg.starts
         };
         let lengths = vec![Some(1); starts.len()];
-        self.to_bed12(reference, starts, &lengths, color)
+        self.to_bed12(reference, starts, &lengths, CPG_COLOR)
     }
 
     pub fn to_bed12(
diff --git a/src/lib.rs b/src/lib.rs
index 2700f65e..2cb9fe50 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -45,6 +45,23 @@ pub const LONG_VERSION: &str = env!("CARGO_LONG_VERSION");
 const PROGRESS_STYLE: &str =
     "[{elapsed_precise:.yellow}] {bar:>35.cyan/blue} {human_pos:>5.cyan}/{human_len:.blue} {percent:>3.green}% {per_sec:<10.cyan}";
 
+/// COLORS
+pub const NUC_COLOR: &str = "169,169,169";
+pub const M6A_COLOR: &str = "128,0,128";
+pub const CPG_COLOR: &str = "139,69,19";
+pub const LINKER_COLOR: &str = "147,112,219";
+pub const FIRE_COLORS: [(f32, &str); 9] = [
+    (1.0, "139,0,0"),
+    (2.0, "175,0,0"),
+    (3.0, "200,0,0"),
+    (4.0, "225,0,0"),
+    (5.0, "255,0,0"),
+    (10.0, "255,140,0"),
+    (25.0, "225,225,0"),
+    (100.0, LINKER_COLOR),
+    (200.0, NUC_COLOR),
+];
+
 /// unzip a vector of tuples
 pub fn unzip_to_vectors<T, U>(vec: Vec<(T, U)>) -> (Vec<T>, Vec<U>) {
     vec.into_iter().unzip()