69 def color 70 case speed 71 when 0..3 then 72 '#000000' 73 when 4..7 then 74 '#330000' 75 when 8..10 then 76 '#660000' 77 when 11..14 then 78 '#990000' 79 when 15..17 then 80 '#cc0000' 81 when 18..21 then 82 '#ff0000' 83 when 22..24 then 84 '#ff3300' 85 when 25..28 then 86 '#ff6600' 87 when 29..31 then 88 '#ff9900' 89 when 32..34 then 90 '#ffcc00' 91 when 35..38 then 92 '#ffff00' 93 when 39..41 then 94 '#ccff00' 95 when 42..45 then 96 '#99ff00' 97 when 46..48 then 98 '#66ff00' 99 when 49..52 then 100 '#33ff00' 101 when 53..90 then 102 '#00ff00' 103 else 104 '#999999' 105 end 106 end