It's exactly as you said. My problem is exactly that! Basically, I cannot understand why, by using the same exact parameters, I have different results.
As you can see in the screenshot, both the color, the opacity, and the size are set to the same value, but the results are different.

Hello everyone, [short introduction] I'm a long-term icon designer (for anyone interested, I'm the developer of AwOken icon theme -> http://alecive.deviantart.com/art/AwOken-163570862 ). I started that project completely from scratch and without any previous knowledge, and being a self-taught person...