I have two reasons to question the Rainbow-Xeno color bijection. Also, I have included my vote in case we do still use this function. Hence, I have a very long first post to this list. First, why are we mapping between Rainbow and Xeno colors at all? I assume this arises from using Xeno colors to play Binary Homeworlds, but that is actually a mapping of Xeno colors to Construction, Trade, Movement and Boarders (or Hackers, if your ships are attacking your opponent's ships' computers). I prefer mapping the colors to game functions for each game in isolation, rather than a global color match that must leave some large number of fans unsatisfied. For Homeworlds, I like this function: Construction = Clear Trade = White Movement = Orange Hackers = Cyan The builders have diamond ships. Trade is by accounting that is still called "paperwork" even when trees no longer die for shuffling debts. Acceleration into hyperspace leaves a warm orange contrail. Hackers cause the opposing ship's crew to see the futuristic "cyan screen of death" as control is wrested away. The out-of-game reasons Construction and Trade are such neutral colors is that they're the ones about adding or changing other ships' colors. Another reason not to assign a color function between treehouse releases is that I would love to see yet another treehouse color quintet released. I usually play Volcano with Red, Orange, Yellow, Clear and Green pyramids, but would prefer two more "warm" translucent colors (replacing green and clear) available for such a hot game. Likewise, IceTowers with Blue, Cyan, Purple and Clear, then other colors as necessary, would benefit from the presence of more cool colors (although clear is actually a very good choice for this game, more cool colors allow for more players while keeping the icy appearance). IceTowers loses some aesthetic appeal with the opaque white pyramids in play, while Volcano suffers greatly from opaque pyramids in play (excepting the black caps, of course). Thus a new treehouse release with the opaque gray 'mids and two warm colors and two cool would send me running to my FLGS with a smile. If the ultimate decision is to use a global color bijection instead of suggesting color designation for each game separately, here is my ranking of the proposed color correlations: Best matches (1 strong agreement, 2 medium & 1 weak): Cyan = Blue Purple = Red Orange = Yellow Clear = Green Not as good (1 strong agreement and 3 weak): Cyan = Blue Orange = Green Purple = Yellow Clear = Red Most confusing function (3 medium & 1 weak): Cyan = Green Orange = Red Purple = Blue Clear = Yellow Thank you. Dennis D Duquette ============================================ Theorem: All numbers are equal. Proof: Choose arbitrary a and b, and let t = a + b. (a + b)(a - b) = t(a - b) a^2 - b^2 = ta - tb a^2 - ta = b^2 - tb a^2 - ta + (t^2)/4 = b^2 - tb + (t^2)/4 (a - t/2)^2 = (b - t/2)^2 a - t/2 = b - t/2 a = b ____________________________________________________________________________________ Finding fabulous fares is fun. Let Yahoo! FareChase search your favorite travel sites to find flight and hotel bargains. http://farechase.yahoo.com/promo-generic-14795097