Settings for iPhone 5S Text Message comes over as email
Messages are always received in grey, regardless of if they are iMessages (from a phone number or email address) or text messages.

But to get the messages sending from your number, not your email:


Go to Settings
Scroll down and tap "Messages"
Scroll down and tap "Send &amp; Receive"
Make sure only your phone number is checked off in the "Start New Conversations From" section.
(It may also be worth unchecking your email address(es) from the "You Can Be Reached By iMessage At" section as well... though I don't think this should be required).