title: ipdb show color code instead of color
body: <p>Use <code>import ipdb; ipdb.set_trace()</code> to insert breakpoint.
  Color is fine when first hit the breakpoint, but it shows color code instead of true color when hit the BP the second time (by press <code>c</code>) and so on.</p>
  
  <pre>
      ←[1;32m     72 ←[1;33m        ←[1;32mimport←[0m ←[0mipdb←[0m←[1;33m;←[0m ←[0mipdb←[0m←[1;33m.←[0m←[0mset_trace←[0m←[1;33m(←[0m←[1;33m)←[0m  ←[1;31m# XXX BREAKPO
      INT←[0m←[1;33m←[0m←[0m
  </pre>
  
  <p>It is in windows 7, python 2.7 and 2.6 have the same issue. I think one work around method is using nocolor scheme (how to get nocolor scheme?) And how to fix this issue with color scheme available? Thanks!</p>