I love the layout and the graphics.

I hate, hate, hate the super-intense shade of blue you have currently.

There's a zillion shades of blue you can use in the gradient. Why not something lighter, less saturated, which would make it more inviting to use and less of a headache/threat/challenge?

Not enough tonal contrast between the background and the logo.

Can I assume that delaring new colors is relatively trivial, and won't upset the layout, because I love the layout, very logical, easy to use.

My Best,

Gary