It's a pleasure!
RE: Waveform darkness, there's no control I'm aware of to make the actual waveform in a region brighter or darker. All I can suggest is to try changing the colour of the regions.
Select the region and press Option-C to bring up the colour palette.
I remember when I cam to Logic 8 from 7 it took me a little while for my brain and my eyes to adjust to the colours - but now it's like second nature....
Having said that there are advanced ways of changing the colours of buttons, faders, etc if you're feeling brave and a dab hand with a graphics package like Photoshop. This involves opening the Logic package, finding the graphics files for the different objects and manually changing them and replacing within the package.
If you want to go that route just remember to keep a backup of the Logic application file!