Chlorophyllum break, a sign of virus.
Virus has been discussed ad infinitum, I have nothing new to add. As part of my yearly inspection and clean up of all of my plants, I made the sad discovery that a very large, high quality Dendrobium speciosum (Len's Good Gold) is virused. These plants are so tough that I never thought they could do this but in the end they are orchids like all the others and are susceptible too.
Here is a picture of the color break in the new leaves for the benefit of newcomers to the hobby who may not have seen this. Also noted was pleating of the new leaves and uniform appearance of all the new leaves. No matter how valuable that plant may be, it's in the trash. When you see obvious color break like that on green leaves or color break in the flowers of for example Cattleyas, there is no need to test. Just discard the plant.
Merry (Ha, ha) New Year, I hope the new year will be better than the last day of this year!!!! Don't need surprises like that.