Thank you all for the great comments! You guys made my day. My favorite part was also when I got the color but failed to hold on to it. There used to be an option when first designing the game where you can just hit 'space' to jump to result, but, as expected, it never made it to daylight.
@walaber @marchmain Yes the size does matter when blending. If you hit larger circles you receive more of their color and same for smaller ones. Hover over to the little tags/stickers/whatevers on the main menu (to the right)! Also for the algorithm, I googled for a while and here's a quick summary. I used a simple weighted combination of rgb, as it is said to be mathematically correct. However, it may not be totally intuitive for human eyes, as we perceive most of the greens more or less the same. There are many other algorithms that I came across but I just did not have enough time to implement and test them one by another :(
@gaz-ireland I see your point! I went for the approach that if you want a bit more yellow, go for a small one as it adds only a little to what you have. Maybe (if I had more time) it's good to have something like two game modes, where one is grouped and traditional/recognizable colors and others are limitless/free-range colors? Thanks for the feedback!