Colors in table do not display correctly
 

I am running Atahualpa 3.1.9

I am trying to display a table on a site and I have entered the <tr bgcolor="#FFCC66"> in the HTML, but when it displays on the site, it transforms it to lowercase: <tr bgcolor="#ffcc66"> and then it displays gray instead of the color

Is there any reason case of the text is changing?

The color are being overwritten by the CSS at A. Theme Options -> Tables as CSS takes precedence over HTML. To change the styles for all tables, edit the CSS there. To change the style for a specific table only, edit it in the WP editor in HTML mode like this

<table>
<tr>
<td style="background: #123456">
...
</td>
<td style="background: #654321; color: #333333; padding: 5px">
...
</td>
</tr>
</table>