The more recent Jewish tartan was voted on just this year. This tartan was initiated by Rabbi Mendel Jacobs. It is registered by the Scottish Tartans Authority and is 100% kosher. This tartan is a non wool-linen mix to follow kosher laws. The pattern and color choices are to reflect the Scottish-Jewish culture and religious history. His site explaining his Jewish Tartan is at http://www.jewishtartan.com/. A good story about this tartan can be found at ElectricScotland.com
The other Jewish tartan has been around a bit longer. This kosher tartan has been registered through KosherKilts.com. This kilt is 100% wool (no linen).
Both fabrics are beautiful and look like they would go beautifully with the MacIntyre modern hunting tartan which has forest green and a deep blue as its primary colors with accents of red and white.