If you choose to use colors other than those which are your wedding colors in your invitations, consider how you will choose reception place cards. These are often chosen to coordinate with your invitation. If the reception hall will be decorated in different colors than the invitation, consider how the place cards will look on the tables before committing to a particular color. Paying attention to these small details can help ensure that your wedding and reception commences without any missteps.
This will vary a bit depending on whether parents are issuing the invitation or whether the couple are doing so but in general this style is acceptable: