Exodus 26:14

You shall also make another covering for the roof from the skins of rams, dyed-red, and above that again, another covering of violet-colored skins

Other versions

And thou shalt make a covering for the tent of rams' skins dyed red, and a covering above of

And you shall make for the tent a covering of tanned rams' skins and a covering of goatskins on top.

Make for the tent a covering of ram skins dyed red, and over that a covering of hides of sea cows.