Tillandsia ionantha has foliage that changes color when it blooms; this one turns reddish.

 Tillandsia ionantha
     Native to Mexico and Guatemala. Its leaves turn red before it blooms, when several slender purple flowers emerge from the center. They tend to “color up” more in the summer than in the winter (and this is a winter photo). They’re lovely. It is a xeric or dry growing species, and benefits by bright light at least part of the day. It is considered one of the hardiest Tillandsias.