Cattleya labiata

Cattleya labiata var. concolor
'Concolor' is the color variety where lip, petals and sepals are all the same color.
This is usually a pink color. Personally I've never seen a dark colored 'concolor' flower.
At the base of the tube we see again the yellow color with magenta stripes. On the 'concolor' variety, the stripes and yellow color stop together before they reach the lip's frontal lobe.
In many 'concolor' flowers the white eyes(starting at the side lobes) are connected to each other and draw a separation in between the colorful yellow and magenta inside of the tube and the frontal lobe of the lip.
The frontal lobe of the lip always has the same color as the petals and sepals.