diff --git a/include/colors.hpp b/include/colors.hpp
index b0dbc0c..6c66d6f 100644
--- a/include/colors.hpp
+++ b/include/colors.hpp
@@ -3,10 +3,19 @@
 
 #include <ztd/color.hpp>
 
+#include <utility>
+#include <string>
+
 // Global constants
 extern const ztd::color no_color;
 extern const ztd::color repo_color;
 extern const ztd::color aur_color;
 extern const ztd::color error_color;
 
+extern const ztd::color new_version_color;
+extern const ztd::color old_version_color;
+extern const ztd::color neutral_version_color;
+
+std::pair<std::string, std::string> color_diff(std::string const& str1, std::string const& str2);
+
 #endif //COLORS_HPP
diff --git a/include/opt_bool.h b/include/opt_bool.h
index 48fec5a..c26a899 100644
--- a/include/opt_bool.h
+++ b/include/opt_bool.h
@@ -10,6 +10,7 @@ extern bool opt_aur;
 //print
 extern bool opt_pall;
 extern bool opt_notitles;
+extern bool opt_nocolor;
 extern bool opt_plist;
 extern bool opt_plistraw;
 extern bool opt_psizes;
diff --git a/src/colors.cpp b/src/colors.cpp
index 7b91c32..b2b3980 100644
--- a/src/colors.cpp
+++ b/src/colors.cpp
@@ -4,3 +4,52 @@ const ztd::color no_color(ztd::color::none);
 const ztd::color repo_color(ztd::color::b_white);
 const ztd::color aur_color(ztd::color::b_cyan);
 const ztd::color error_color(ztd::color::b_red);
+
+const ztd::color new_version_color(ztd::color::b_green);
+const ztd::color old_version_color(ztd::color::b_red);
+const ztd::color neutral_version_color(ztd::color::b_white);
+
+std::string version_delimiters = ".-+_:";
+
+static bool isDelim(const char c)
+{
+  return version_delimiters.find(c) != std::string::npos;
+}
+
+
+std::pair<std::string, std::string> color_diff(std::string const& str1, std::string const& str2)
+{
+  std::string r1, r2;
+  {
+    //CORE FUNCTION
+    unsigned int i=0, j=0;
+
+    while( i < str1.size() && i < str2.size() )
+    {
+      while( i < str1.size() && i < str2.size() && str1[i] == str2[i] && !isDelim(str1[i]) )
+        i++;
+
+      if( str1[i] != str2[i] ) //there is a difference
+      {
+
+        r1 += neutral_version_color;
+        r1 += str1.substr(0, j); //previous section
+        r1 += old_version_color;
+        r1 += str1.substr(j, str1.size() - j); //changed section and rest
+        r1 += no_color;
+
+        r2 += neutral_version_color;
+        r2 += str2.substr(0, j); //previous section
+        r2 += new_version_color;
+        r2 += str2.substr(j, str2.size() - j); //changed section and rest
+        r2 += no_color;
+
+        break;
+      }
+      i++;
+      j=i;
+    }
+  }
+  return std::make_pair(r1,r2);
+
+}
diff --git a/src/opt_bool.c b/src/opt_bool.c
index 99a72ba..0d80d6e 100644
--- a/src/opt_bool.c
+++ b/src/opt_bool.c
@@ -9,6 +9,7 @@ bool opt_aur=false;
 //print
 bool opt_pall=false;
 bool opt_notitles=false;
+bool opt_nocolor=false;
 bool opt_plist=false;
 bool opt_plistraw=false;
 bool opt_psizes=false;
diff --git a/src/options.cpp b/src/options.cpp
index 7b786d4..f580a02 100644
--- a/src/options.cpp
+++ b/src/options.cpp
@@ -26,6 +26,7 @@ void create_options()
   options.add(ztd::option('i', "install-size",  false, "Install size (repo only)"));
   options.add(ztd::option('n', "net-size",      false, "Net difference size (repo only)"));
   options.add(ztd::option('k', "no-titles",     false, "Don't print titles on -d -i and -n"));
+  options.add(ztd::option('C', "no-color",      false, "Don't print colors"));
   options.add(ztd::option("\r  [OPERATION]"));
   options.add(ztd::option('u', "update",        false, "Update targeted repositories"));
   options.add(ztd::option('y', "noconfirm",     false, "Doesn't ask for confirmation"));
@@ -57,6 +58,7 @@ void options_bool()
   //print
   opt_pall = options.find('p')->activated;
   opt_notitles = options.find('k')->activated;
+  opt_nocolor = options.find('C')->activated;
   opt_plist = options.find('l')->activated;
   opt_plistraw = options.find('L')->activated;
   opt_psizes = options.find('s')->activated;
diff --git a/src/print.cpp b/src/print.cpp
index 39b3a7f..e3aec3b 100644
--- a/src/print.cpp
+++ b/src/print.cpp
@@ -34,40 +34,46 @@ std::pair<double, const char*> convertHReadable(const long int size)
   return std::make_pair( ret, size_suffixes[pow1k] );
 }
 
+static const char* p_color(const ztd::color c)
+{
+  if(!opt_nocolor)
+    return c.code();
+  else
+    return "";
+}
+
 void print_update(repo_update& ru, ztd::color color, bool dlsize, bool nisize, bool nusize)
 {
   if(ru.packages.size() > 0)
   {
-    printf("%s[%s] %lu updates%s\n", color.code(), ru.name.c_str(), ru.packages.size(), no_color.code());
+    printf("%s[%s] %lu updates%s\n", p_color(color), ru.name.c_str(), ru.packages.size(), p_color(no_color) );
     for(auto it : ru.packages)
     {
       std::string v1;
       std::string v2;
-      if(ztd::sh("command -v zdiffcolor").size() > 0)
+      if(!opt_nocolor)
       {
-        std::string command="zdiffcolor -n b_white -c b_red -s b_green " + it.current_version + ' ' + it.new_version;
-        std::string str=ztd::sh(command);
-        auto newline = str.find('\n');
-        v1=str.substr(0, newline);
-        newline++;
-        v2=str.substr(newline, str.size()-newline-1);
+        auto pv = color_diff(it.current_version, it.new_version);
+        v1 = pv.first;
+        v2 = pv.second;
       }
       else
       {
-        ztd::color v1c = ztd::color::b_red, v2c = ztd::color::b_green, noc = ztd::color::none;
-        v1 = v1c.code() + it.current_version + noc.code();
-        v2 = v2c.code() + it.new_version + noc.code();
+        v1 = it.current_version;
+        v2 = it.new_version;
       }
-      printf("  %*s %*s ->  %*s  | ", -1*(ru.name_max_length + 2), it.name.c_str(), -1*(ru.vcur_max_length + 20), v1.c_str(), -1*(ru.vnew_max_length + 20), v2.c_str());
+      int c_padsize = (opt_nocolor ? 0 : 20) ;
+      printf("  %*s %*s ->  %*s  | ", -1*(ru.name_max_length + 2), it.name.c_str(), -1*(ru.vcur_max_length + c_padsize) , v1.c_str(), -1*(ru.vnew_max_length + c_padsize) , v2.c_str());
       if(dlsize)
         print_size(it.download_size, true, "", 0, ztd::color::none, 2, size_index, "  : ");
       if(nusize)
         print_size(it.net_size, true, "", 0, ztd::color::none, 2, size_index, "");
       printf("\n");
     }
-    std::cout << color;
+    std::cout << p_color(color);
     std::cout << "================================";
-    std::cout << no_color << std::endl;
+    std::cout << p_color(no_color);
+    std::cout << std::endl;
   }
 }
 
@@ -81,9 +87,10 @@ void print_update_sizes(repo_update& ru, ztd::color color, bool dlsize, bool nis
     print_size(ru.net_size, !notitle, "Net Upgrade Size:", size_print_padding, color, 2, size_index);
   if(!notitle && (dlsize || nisize || nusize))
   {
-    std::cout << color;
+    std::cout << p_color(color);
     std::cout << "================================";
-    std::cout << no_color << std::endl;
+    std::cout << p_color(no_color);
+    std::cout <<std::endl;
   }
 }
 
@@ -92,7 +99,7 @@ void print_size(long int size, bool printTitle, std::string title, int padding,
   auto tpair = convertN(size, sizepow);
   if( printTitle )
   {
-    printf("%s%*s%s", color.code(), padding, title.c_str(), no_color.code());
+    printf("%s%*s%s", p_color(color), padding, title.c_str(), p_color(no_color) );
   }
   unsigned int sizepad=precision+5;
   if(sizepow == 0)