Correct way to change specific date's cell background-color on datepicker - jquery-ui-datepicker

Question

I have seen many answers on the line of
How to change the cell color of a jquery datepicker
But they for some reason do not apply to my example.
http://plungjan.name/test/datepicker_orange.html
I want the WHOLE cell content to be orange, not just what we can see behind the link IN the cell
So what I can see as
.ui-state-default {
background: url("images/ui-bg_glass_75_e6e6e6_1x400.png") repeat-x scroll 50% 50% #E6E6E6;
border: 1px solid #D3D3D3;
color: #555555;
font-weight: normal;
}
which controls the link inside the cell with a class name set by me to "orange"
<td class=" orange" onclick="DP_jQuery_1327604402271.datepicker._selectDay('#toDate',1,2012, this);return false;" title="Almost sold out">
<a class="ui-state-default" href="#">15</a>
</td>
where the orange class is given by me in this code:
return [true,"orange","Almost sold out"];
It shows
and not
Which I can get if I remove the background image of the above ui-state-default in firebug
What is the correct method of changing the complete cell color of the cells I now change using the beforeShowDay?
I tried helping the situation by overriding the default:
.ui-state-default {
background-color: transparent;
border: 1px solid #D3D3D3;
color: #555555;
font-weight: normal;
}
Did not make any diffence

Answer 1

#mplungjan Change css to this:
td.highlight {border: none !important;padding: 1px 0 1px 1px !important;background: none !important;overflow:hidden;}
td.highlight a {background: #99dd73 url(bg.png) 50% 50% repeat-x !important; border: 1px #88a276 solid !important;}

Answer 2

If you put your class directly on the tag you have to change it to this:
.ui-state-default {
background: #E6E6E6;
border: 1px solid #D3D3D3;
color: #555555;
font-weight: normal;
}
In CSS if you have a backgorund image and a background color then the browser will show you the image which in this case is that gradient grey that you have in the first example.