Of course I have seen plenty of blouses that match the design or embroidery or the sparkles of the saree, most of them do not continue to the back of the blouse.
Here is an example, where the blouse back picks up design elements from the saree in a very intricate embroidery and a unique cut.
The gold chains in the back match with the gold geometrical shapes of the saree. The sparse but bold embroidery on the pallu provides the inspiration for the embroidery and color choices on the back.
