I used a kelvin filter to bring out blues and pinks and then played with tints until I brought out the rose colored hues that actually are part of this cactus.
Just before the tip of each agave, it looks like a sliver of a glowing light.
These points are really sharp and will stick right into your muscle in your arm, as I have done this. Some people cut off the agave tips to avoid injury but I would not do so. They are part of the beauty of the plant.
Check out the sculptured look of Santa Fe at Viva la Voyage!