color: move 'write' logic to the core ui class
One more step, the support for writing color is not directly in core. No
behavior change for the default case ('_colormode' = None).
Here are the details of what we have to change to the core method:
* apply to 'self.label' to input in the buffered case
* dispatch to 'win32print' when applicable
* apply to 'self.label' to input when applicable
{motd}
<div class="logo">
<a href="{logourl}">
<img src="{staticurl|urlescape}{logoimg}" width=75 height=90 border=0 alt="mercurial"></a>
</div>
</body>
</html>