I've got a fix for the Palette:
In Post.lng find the 1; and add above it
$post_txt{'palette'} = 'Change Text Color';
In PostBox.pm find
<span class="ubbcbutton ubbcbuttonback"><img src="$yyhtml_root/UBBCbuttons/palette1.png" class="cursor" onclick="window.open('$scripturl?action=palette;task=post', '', 'height=308,width=302,menubar=no,toolbar=no,scrollbars=no')" alt="" /></span>
and replace with
<span class="ubbcbutton ubbcbuttonback"><img src="$yyhtml_root/UBBCbuttons/palette1.png" class="cursor vtop" onmouseover='contextTip(event, this.alt);' onmouseout='contextTip(event, this.alt);' oncontextmenu='if(!showcontexthelp(this.src, this.alt)) return false;' onclick="window.open('$scripturl?action=palette;task=post', '', 'height=308,width=302,menubar=no,toolbar=no,scrollbars=no')" alt="$post_txt{'palette'}" /></span>
Now, why this was missing in 2.5AE, I don't know. But this looks like one of those cases where an omisson just kept being carried into new versions.
I haven't had a chance to check the UBBC mods