Coloring.

app/views/projects/commits/_parallel_view.html.haml

@@ -2,29 +2,32 @@
 %div.text-file
   %table
     - side_diff_line(diff, index) do |line, type, line_code, line_new, line_old, raw_line, next_line|
-      %tr.line_holder.parallel{ id: line_code, class: "#{type}" }
+      %tr.line_holder.parallel{ id: line_code }
         - if type == "match"
           = render "projects/commits/diffs/match_line_parallel", {line: line,
           line_old: line_old, line_new: line_new, bottom: false}
         - else
-          %td.old_line
           - if diff.new_file
+            %td.old_line{ class: "old" }
             %td.line_content.parallel= " "
           - else
+            - next if type == 'new'
+            %td.old_line{ class: "#{type}" }
               = link_to raw(line_old), "##{line_code}", id: line_code
               - if type == 'old'
                 %td.line_content{class: "parallel noteable_line old #{line_code}", "line_code" => line_code}= raw line
               - else
                 %td.line_content.parallel= raw line
-          %td.new_line{data: {linenumber: line_new}}
           - if diff.deleted_file
+            %td.new_line{class: "new", data: {linenumber: line_new}}
             %td.line_content.parallel= " "
           - else
+            %td.new_line{class: "#{type}", data: {linenumber: line_new}}
               = link_to raw(line_new) , "##{line_code}", id: line_code
               - if type == 'old'
                 %td.line_content.parallel{class: "noteable_line new #{line_code}", "line_code" => line_code}= raw next_line
               - else
-                %td.line_content.parallel= raw line
+                %td.line_content.parallel{class: "#{type}"}= raw line
 
 - if diff.diff.blank? && diff_file_mode_changed?(diff)
   .file-mode-changed