I have used CSS to accomplish the reverse (make a label appear like a
textbox) but it should be easily done using CSS, something similar to
below perhaps:
/* Works for all textboxes */
input {
border: none;
background-color: <page background color>
}
/* Works for textboxes with a class of label
input.label {
<same as above>
}
I tested this briefly on my development machine and it works like a
charm.