Use of SVG filter instead of Photoshop gradiantmap

[zufrieden]

@guillaumeberry WDYT ?
https://codepen.io/vkjgr/pen/GgpMRz

[zufrieden]

more on this here
https://alistapart.com/article/finessing-fecolormatrix
and some to try
http://kazzkiq.github.io/svg-color-filter/

[guillaumeberry-zz]

Great! Gogogo @zufrieden

And tell me if we need to put all source images in grayscale to ensure consistency.

[dmrty]

@guillaume-berry I will need input on the type of Color for the mapping / or a photoshop file that demonstrate the behaviour