i'm using construct2 for some month now and hopefully i haven't overlooked anything -
a crosshair on the top window of the color palette would be very helpful for color choices. otherwise it is hard to change a picked color slightly to a nearby one if you can't see it in the color window.
of course you can do it by changing the rgb values, but this is more for programmers than artists ;)
Develop games in your browser. Powerful, performant & highly capable.