I installed Lucid today and was able to get my custom grub screen looking good!
Thanks for the tutorial! I had it set to 640x480 with Karmic, but lost it when I did the fresh install.
That looked like the size it was meant to be, but this time I made it 1920x1200 and it looks great.
Edit: The screen actually looks great and looks as one would expect it to look.
It is a huge picture, but the box is in the right place and the font size is good.
I wouldn't want a size 21 font or something like that on there anyway.
So, no complaints! I am good! And the bootup screen is awesome in my opinion!