Way to bold or color top line in drop down option menu?

[joe boom]

We sell apparel that can be personalized with embroidery at
extra cost. Aside from the usual drop down forms for entering size and
color, we require the customer to enter whether he wants embroidery.
A selection is required-- either yes or no-- before the checkout process
can continue. Many customers who don't want embroidery are delayed when they
over look making that selection

The option menu is done with Shopsite as follows:

Embroidery - Yes or No?;n
No Embroidery;
1 Line-Embroidery-$6;6.00
2 Lines-Embroidery-$9;9.00
3 Lines-Embroidery-$12;12.00

It would be less confusing for customers if we could make that drop down
form query stand out, either by bolding or coloring the top line.

Using an HTML <b> tag doesn't work. I've played with CSS but
can't do the trick. Any ideas?

Thanks www.ackley-uniforms.com
..