Download of HuePaint 5.3.3 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software relates to Design & Photo Tools. We recommend checking the downloaded files with any free antivirus. This software for Mac OS X is a product of Norbyte.
From the developer:
Paint with oil on canvas and create beautiful works of art using this app’s colorful painting tools and workflow-friendly user interface.
Realistic Oil on Canvas
HuePaint features live-calculated brushes and strokes that interact in real time with the uniquely generated, non-repeating canvas texture.
Applying more or less of your fingertip when painting will change the stroke size accordingly.
You may want to check out more Mac applications, such as UnCoverIt, TurboCAD Mac Designer or JPEG4Web, which might be related to HuePaint.