ColorMail - Color Email iPhone & iPad
iOS Universal Utilities
ColorMail is a "does what it says on the tin" application to add a little color to your emails and allows you to compose your emails in landscape format. You can select the foreground and background colors, font and font size as you compose then send your email off to the devices's email application.
If you encounter any problems or have any suggestions for improvements use the email link on the support page. If you want to sketch an email with your finger check out "DrawMail" by the same author.
Use multiple fonts and colors in an email