I'm enjoying ArtRage a lot. Many of the features surpass the most popular art software in the market.
However I wish it had a Curves adjustment function for colors, like the one in Photoshop.

The Layer color adjustment in Artrage is alright but not always satisfactory.
It's also quite slow because it updates both the zoom-in window and the canvas at the same time.

Would be it possible to add Curves adjustment in the future? And add a "Preview" on/off switch?