What I mean is I want to play around with the colour. Try a few different options til it looks right. I observed that as I selected a few different colours the effect was changing. I couldn't go back to a solid black.
I looked closer at what colour tint is doing and it's definitely the wrong effect. Looks like it's just outlining the solid colours which is not what I want. And that's why each new colour tint made the colour change weird.