Basically, you can identify which type of blanket is which, even if you haven't identified the blankets. In NotEye, waterproof blankets are always blue, fireproof red, and plain brown. This is opposed to ASCII, where they are all brown.

I recommend either A) leaving them all colored brown until you ID them (and then they take on a different hue) or B) changing their colors in ASCII as well, to make things consistent.

Obviously very low priority, but it actually makes a big difference for low level characters without scrolls of identify to know if they have a waterproof blanket or not.