Interesting -- the canvas size shouldn't be fixed. There's a grip in the bottom right corner which should allow you to resize it. If it doesn't, let me know.

Can you articulate why the selections don't feel nice?

Gradients are possible and also on the todo list. Designing a clean UX to facilitate their creation is tough though. If only there was a tool I could use to experiment with different designs...

As far as the demo site, I'll change it. But today's HackerNews launch day, so it only seems appropriate.

oh sorry, I didnt notice the canvas resize, I think thats more along the problem I mentioned before, it feels like a website a little much, I expect my "canvas" to be centered and on a darker gray bg, as it would be in gimp / photoshop / inkscape / fireworks etc.

the selection is harder to explain, the canvas can quite busy and its not very easy to know exactly what is selected, the combination with the floating dialog is kinda annoying as well.

but yeh, too busy to give you proper feedback, will email

also, whats with the weird feature detection for canvas, why not just send people straight to the demo and use standard canvas detection methods, it can bail out with a message if canvas isnt there.

I almost failed the test because the canvas text didnt render the same