1. text shouldn't be deleted by adding an attachment. Don't know why this happens with you. (Maybe it's due to your browser?)
A: go to AdminCP and browse to Templates >> Modify / Delete >> *Default templates* >>
toplinks and
toplinks_admin and
toplinks_member and change the line
<li><a href="$settings[bburl]/index.php">$lang->toplinks_home</a></li>
B: go to AdminCP and browse to Templates >> Modify / Delete >> *Default templates* >> Forum Bit Templates >>
forum_depth1_forum and change the lines
<td class="$bgcolor" valign="top">
<strong><a href="forumdisplay.php?fid=$forum[fid]">$forum[name]</a></strong><br /><div class="smalltext">$forum[description]$modlist</div>
</td>
<td class="$bgcolor" valign="top" align="center" nowrap="nowrap">$threads</td>
<td class="$bgcolor" valign="top" align="center" nowrap="nowrap">$posts</td>
<td class="$bgcolor" valign="top" align="right" nowrap="nowrap">$lastpost</td>
into
<td class=[color=red]"trow2"[/color] valign="top">
<strong><a href="forumdisplay.php?fid=$forum[fid]">$forum[name]</a></strong><br /><div class="smalltext">$forum[description]$modlist</div>
</td>
<td class=[color=red]"trow1"[/color] valign="top" align="center" nowrap="nowrap">$threads</td>
<td class=[color=red]"trow2"[/color] valign="top" align="center" nowrap="nowrap">$posts</td>
<td class=[color=red]"trow1"[/color] valign="top" align="right" nowrap="nowrap">$lastpost</td>
Then open the template
forum_depth2_forum and change the lines
<td valign="top">
<strong><a href="forumdisplay.php?fid=$forum[fid]">$forum[name]</a></strong><br /><div class="smalltext">$forum[description]$modlist</div>
</td>
<td class="$bgcolor" valign="top" align="center" nowrap="nowrap">$threads</td>
<td class="$bgcolor" valign="top" align="center" nowrap="nowrap">$posts</td>
<td class="$bgcolor" valign="top" align="right" nowrap="nowrap">$lastpost</td>
</tr>
into
<td class=[color=red]"trow2"[/color] valign="top">
<strong><a href="forumdisplay.php?fid=$forum[fid]">$forum[name]</a></strong><br /><div class="smalltext">$forum[description]$modlist</div>
</td>
<td class=[color=red]"trow1"[/color] valign="top" align="center" nowrap="nowrap">$threads</td>
<td class=[color=red]"trow2"[/color] valign="top" align="center" nowrap="nowrap">$posts</td>
<td class=[color=red]"trow1"[/color] valign="top" align="right" nowrap="nowrap">$lastpost</td>
</tr>
C: go to AdminCP and browse to Templates >> Modify / Delete >> *Default templates* >> Forum Bit Templates >>
forum_depth1_forum and change the lines
<td width="15" align="left"><img src="$theme[imgdir]/$folder.gif" alt="" /></td>
into
<td [color=red]bgcolor="#FF00FF"[/color] width="15" align="left"><img src="$theme[imgdir]/$folder.gif" alt="" /></td>
go to the template
forum_depth2_forum and change the line
<td class="$bgcolor" align="center" valign="top"><img src="$theme[imgdir]/$folder.gif" alt="" /></td>
into
<td [color=red]bgcolor="#FF00FF"[/color] align="center" valign="top"><img src="$theme[imgdir]/$folder.gif" alt="" /></td>
where the red peace is, you can change it into whatever colour you want in HEX
D: that's just the namestyle of the admin and can be changed via AdminCP >> Users and Groups >> Manage Groups >> Administrators >> Edit Usergroup