coffee grounds possible as sole green in hot pile?

Twice I've built compost piles that heated up beautifully, using grass clippings as the primary green. I can't get grass clippings right now but have access to several hundreds of pounds of coffee grounds. Does anyone know if I could get a pile to heat up well if I used my old dead garden clippings from my spring cleanout as the brown and the coffee grounds as the green? I'm reluctant to build a big heap if it won't heat up to be rough compost in fairly short order. Don't want to attract bears for java!

This says the C:N ratio for grounds is 24 to one.
http://davesgarden.com/guides/articles/view/1501/
What is that of grass clippings?

I've never had enough to use grounds and see if they heat up a cold pile. I just spread them right away.

Here's a useful C/N chart: http://compost.css.cornell.edu/OnFarmHandbook/apa.taba1.html

Thanks for the ratio and the chart info. I'll check it out and give it a try. I've now got some weeds to add to the coffee grounds, so maybe that'll give a good heat boost too.

Awesome chart ! and I think that shows clippings and grounds to be roughly comparable.