I ended up rejecting this fabric, however, because of the way the color was used - with a series of four colors being used separately on the motifs.
I saw something only few days later that made me change my mind.
Below is a caftan belonging to Osman II (1618-1622, so just out of the SCA range). The motif itself is very different, but the arrangement is the same. The color palette is actually quite similar to the one in the cotton I found, and has red, pink, gold and blue as does mine (and an additional olive shade as well). But what is most interesting to me, is that the color arrangement in each motif is different, much like the quilting fabric.