Quote Originally Posted by Raghnall View Post
...One thing to bear in mind most jackets worn during the 15 and the 19 were solid colors. Tartan coats are in vogue during the 45.
Mostly, but not exclusively. I've read descriptions of upper-body garments in tartan from the earlier periods, and there are some images as well. The slashed doublet here has a vertical tartan sett matching the trews: