The number of colors really depends on the simplicity or complexity of your home. Adding too many colors to a home that's really designed to have a maximum of 3 or 4 colors will make the home look garish, and the exterior paint colors will come off as garish. Look for homes with similar architecture, hopefully by the same builder, and see what others have successfully done.
Definition: A debit is an accounting entry that either increases an asset or expense account, or decreases a liability or equity account. It is positioned to the left in an accounting entry.
The term debit refers to the left side of an account and credit refers to the right side of an account. A debit is always entered in the left hand column of a Journal or Ledger Account and a credit is always entered in the right hand column.