Nether Portal Colours

I was watching Gem build her entrance to her mega build on hermitcraft and noticed that the bright purple stands out from the nice deep red. Which is odd, as the nether blocks tie in so perfectly. So, why not make nether portals dyeable? This will allow builders to more easily incorporate their nether portals into their builds and make nether portals less of a thing to hide, and more a display. You should be able to either dye it by right clicking on a portal with dye, or maybe create loot you can find in bastions and nether fortresses similar to the smithing template that can be right clicked on to the nether portal. This would be a fun, easy change to allow builders to continue to flourish.