Prusa XL Bed Thermal Image texture

Make a copy of your XL.svg  found at 

Program Files\Prusa3D\PrusaSlicer\resources\profiles\PrusaResearch

replace the original with the included xl.svg in my files here

Created from this thermal image video - https://www.reddit.com/r/prusa3d/comments/15rxpcv/prusa_xl_heatbed_startup_sequence/#lightbox