message: make previous_header hashes green
diff: @@ -7,6 +7,8 @@ use blockchain::normal;
  use blockchain::{Block, SscProof};
  use wallet_crypto;
  +use ansi_term::Colour;
  +
  // Constants for the fmt::Display instance
  static DISPLAY_INDENT_SIZE: usize = 4; // spaces
  static DISPLAY_INDENT_LEVEL: usize = 0; // beginning starts at zero
  @@ -136,9 +138,13 @@ impl Pretty for normal::BlockHeader {
  ),
  (
  "previous hash".to_string(),
  - Val::Raw(wallet_crypto::util::hex::encode(
  + Val::Raw(
  + Colour::Green
  + .paint(wallet_crypto::util::hex::encode(
  self.previous_header.as_ref(),
  - )),
  + ))
  + .to_string(),
  + ),
  ),
  ("body proof".to_string(), self.body_proof.to_pretty()),
  ("consensus".to_string(), self.consensus.to_pretty()),
  