The SVG origin is immaterial as the XDA converts the SVG into shapes.

Gary's suggestion is all I can visualise.
I tried with RGBY into four Layers and chose the Export PNG > Options > tick: export each layer to a file of its own.
I named the file colours and got:

  1. Colours.png - everything
  2. Colours Pasteboard.png - blank
  3. Colours Page background.png - blank
  4. Colours Red.png
  5. Colours Green.png
  6. Colours Blue.png
  7. Colours Yellow.png

So the separated images are files of filename: basename layername.png

Were you hoping to separate the colours into channels?

Acorn