Currently when using the colour sample tool (eyedropper), it seems necessary to hit 'yes/confirm' in a dialog box at the bottom of the screen, which is redundant and slow ( thus annoying).

There are many ways around this, the simplest I might suggest would be that once the desired colour has been located, you just tap in the coloured circle that displays the colour to confirm.
This would make more sense, and eliminate some of pointless UI garbage that this app seems burdened with.
Thanks