Guess I should have mentioned my reasoning in choosing the current color lineup:
Blue (Nastase, McEnroe, Sampras, Kafelnikov, Rafter, Federer) - Shot mastery, balanced game play, preference to tactics, if imbued with unpredictable comical shots -> leans to light blue (Ilie Nastase); if imbued with net play and serve and volley tactics, imbues to purple (Patrick Rafter) or darker blue (Kafelnikov), and if enough uniqueness in shots is reached, Dark Blue (John McEnroe).
Green (Connors, Courier, Agassi, Kuerten, Roddick) - Spirited style of play, baseline play or serve and volley tactics are both accepted here, if the player utilizes a lot of energy on the court. More defensive - yellow imbued (Jim Courier), variation of hits - blue imbued (Agassi, Roddick). Purely spirited (Connors as original, Kuerten for his unique grunts).
Yellow (Borg, Lendl, Moya, Ferrero) - Defensive style of play, or offensive baseline style of play, or nothing special, but non-aggressive style of play. If there is variation and a little net play, the color becomes white (Wilander). Aggressive moments in play lead to reddish or orange hints (Ferrero or Moya).
Orange (Newcombe, Becker) - Attacking style of play, not physically intense enough to be purely aggressive and combined with baseline play.
Purple (Edberg, Djokovic) - Attacking style of play, not physically intense enough to be purely aggressive and combined with shot mastery, or volley mastery (Edberg).
Maroon (Safin) - Attacking style of play with occasional aggressive moments dominated by power shots and groundstrokes (unique to Marat Safin).
Red (Muster, Hewitt, Nadal) - Aggresive style of play, physically intense hits, aggressive body language (Muster, Hewitt).
Gray (Marcelo Rios) - We all know what this neutral color means LOL
Following this, my estimate for Murray if he is 26th would be either green or yellow or a combination of them, mostly yellow. He's defensive like his mentor, Lendl.