PrusaSlicer 2.9.0 multimaterial painted surface depth

[collurpf]

When I print a multi-colored part that I used "multimaterial painting" to alter the color, it seems to waste quite a bit of the filament on the colored surface. Is there a way to reduce this? In the example attached, the yellow test was printed on the side of a cylindrical surface, but it prints very far into the part. I would like to limit it to a few mm rather than the existing depth of roughly 125 mm. This would, I'd think speed up the print as more of the interior would be red infill instead of the current yellow "text".