Can you change the icon?

Are there options for which PayPal icon you display? I'd really like to have an icon that specifically says "PayPal Express Checkout" instead of just "Checkout with PayPal"

You'll have to ask PayPal.

PayPal buttons are here:
paypal.com/cgi-bin/webscr?cmd=xpt/Marketing/general/PayPalNewLogoAnnouncement-outside&

Here's what I did to change the button in the shopping cart. I did not find the exact button that I wanted, so I settled on something with a smaller footprint than the original.

CAUTION: This does involve changing a core file. I know that's a no-no but I couldn't find any other way.

In the core file includes/modules/payment/paypal/tpl_ec_button.php:
I changed the image used for the PayPal button from this:
MODULE_PAYMENT_PAYPALWPP_EC_BUTTON_IMG
to this:
MM_PAYPAL_EC_BUTTON_IMG

and then added this:
define('MM_PAYPAL_EC_BUTTON_IMG', 'https://www.paypal.com/en_US/i/logo/PayPal_mark_60x38.gif');
to my site-specific defines file, includes/extra_configures/mm_site_defines.php

I think you'll be safe and hopefully the PayPal cops won't come to your door. :P

I think they have much bigger fish to fry. :laugh:
Besides, I still have the PayPal icon and the option for Express Checkout, just like I'm supposed to.