Durasexual (or Duraromantic) is under the grey-ace (or grey-aro) spectrum. It’s where you rarely experience romantic attraction, but when you do it lasts for over a year, ergo the ‘dura’. The grey is for the grey-aro spec. The white is for long lasting attraction (because white is a symbol for eternity.) The pink is for romantic attraction. The purple is attraction to binary genders (blue and pink mixed,) and the yellow is for attraction to nonbinary genders.
It can be put together like ‘dura-homosexual’ or ‘dura-biromantic’ too!