To apply filter to an Konva.Image, we have to cache it first with cache()
function. Then apply filter with filters() function.
To change rgb components of an image with Konva, we can use the `Konva.Filters.RGB.
Instructions: Slide the controls to change rgb values.
For all available filters go to Filters Documentation.
{% iframe /downloads/code/filters/RGB.html %}
{% include_code Konva RGB Image Demo filters/RGB.html %}