duotone filter pack

Had an idea on the previous 60's filter pack and the psychedelic rgb mashup, to map a gradient over a turbulence. Then realised that from two colours there are quite a variety of simple linear gradients so instead made a pack for a duotone effect that I'll build upon.

These are simply made of component transfering and compositing with flood fills.
Here is how the base is laid down.



svg source



Have to admit this is the second corrected version. Firstly there is a bug in inkscape's filter editor preventing to type in and store the right rgb values for flood fills.
Secondly the colormatrix used in the previous version didn't produce a fully opaque area resulting the checkerboard showing through the solid areas.