I've got a very weird problem. I need to replace colour of a simple object in Photoshop.
I go to Brushes -> Colour Replacement Tool set the Limits and Tolerance, select the new colour but when I start painting the new colour over the old one, it behaves very strangely.
Firstly, it paints with a semi-transparent colour. It is approximately 50% opacity.
Secondly, it only allows me to select a colour similar to the old colour. For example, if my object is green and I want to replace the colour with red - nah, it won't do it. Only other shades of green but no new colours.
Thank you for the suggestion. I just tried that. At first it looks like it should work but it doesn't. When I select bright red from the swatch popup, it changes the object from green to light grey. In other words it produces an identical effect as if I had set Lightness to +100