I doubled the display sensitivity of the Rain Accumulation overlay and increased the display range by 20%, to 2,500 mm.
This has the same overlay colors as the prior version (up to 1,000 mm) except the increment used has been reduced from 2.5 mm increment steps, to 1.25 mm steps in rainfall. This means that a color which was prior used to depict 300 mm of rainfall, will now show 150 mm of rainfall instead. Thus I've also had to add a new shading above 1,000 mm up to 2,500 mm. The result shows much more detail and contrast compared to the last version. The lower rainfall events are displayed with double the contrast and detail, while the highest values and their associated structures, development and movement are depicted more clearly than before as well - more detail everywhere.
Rain accumulation [rainAccu]
The setting is here:
Note that if the data gradient becomes very steep during intense events this produces a blocky display when zoomed-out but smooths-out once zoomed-in. In this case the forecast is for extremely intense rainfall (1,910 mm).
With the standard Windy overlay there's literally no visible detail being displayed. It's hard to believe these are showing the same area, time and event.
NOTE: I've mildly edited the upper-end shading since I posted these images and have updated the setting but not these example images (the colors are only slightly changed to improve visual smoothness).