Philipp

i guess you should get the colours pretty close by fiddling with the gradient settings. for opacity: leaflet.heat uses [simpleheat](https://github.com/mourner/simpleheat/) for drawing the actual heatmap. You can modify the colorization...

this https://gist.github.com/schlompf/c07792aea89fcd8627a7 sort of works. right and bottom edge behave as expected ;) for left and top edge, i probably have to change line 105 to `[-size.x, -size.y]` so that...