If you’re interested in finding ways to vary your reference material and explore color options without using photo editing software I suggest giving colored gels a try. I recently took pics for a painting project and used colored gels over my flash-kit to get various color effects.
They can be relatively cheap and all you need to do is attach them to your flash-kit or light source. You can use gaffers tape or a heat-resistant clip. I used a metal binder clip.
All of the color effects in these images were captured in-camera and not manipulated at all.
With the exception of the first image (which was a paint mixture of ultramarine and white), the other paint splats were only zinc white with a high level of linseed oil.
I only removed the background for the pic of all the splats.
I used amber, hot pink, and blue gels. You can lay sheets over each other for different color options.
The flash-kit I use: