fivebyfiveblockgrid_oneliner.cs

var updateColors = _collectiveTime > Threshhold;
_collectiveTime += updateColors ? -_collectiveTime : elapsed.Time;
_random = new Random(_seed = updateColors ? 2.SecondsAgo().Millisecond : _seed);

5.TimesWithIndex(column => 5.TimesWithIndex(line => new Block(
    origin: new Vector3(_right + -30 + column * 12, _up + (-15 + line * 8), 0),
    width: 5,
    height: 3,
    depth: 8,
    color: _colors[_random.Next(_colors.Length)]).Draw()));