I have found that paint fill doesnt have click and drag points to move the colours around. Also i think there should be an option for the colour sliders to go from 0-255 instead of 0-100 so that that they coincide with the RGB feature. Also the ONLINE section of the menu should be moved to absolute left for dual monitor setups as it goes half and half on my screens.
I have made a special exception for you regarding the centering on the online page. Please let me know when you are not using 2 displays so I cna remove it.