<p>For an already coloured alignment, the conservation index at each\r
alignment position is used to modify the shading intensity of the\r
colour at that position. This means that the most conserved columns\r
in each group have the most intense colours, and the least conserved\r
are the palest. The slider controls the contrast between these\r
extremes.</p>\r
<p>For an already coloured alignment, the conservation index at each\r
alignment position is used to modify the shading intensity of the\r
colour at that position. This means that the most conserved columns\r
in each group have the most intense colours, and the least conserved\r
are the palest. The slider controls the contrast between these\r
extremes.</p>\r