I recently became obsessed with the hip-length racerback Align tanks (RIP) and have been purchasing various colors I could find on Mercari and Poshmark. However, what I really wanted was a dark yellow. Since it seems it was never made in such a color, I did some research and found u/betherks and her amazing instructional guide to dyeing Align tanks. Super happy with the results of this! Almost like a Utility Yellow. Here is a link to her amazing guide!