Thanks to both of you for those very kind comments. I was absolutely buzzing when I finished turning that bowl; it's streets ahead of what I've been turning in the past and I had a feeling that it was going to be a good 'un as soon as I got the basic shape of the outside. Perhaps the pinkish hue is reflection off the shelf, although the heartwood is quite deep in colour anyway.
I think that I'll have a go at turning a round-bottomed bowl, as you both suggest, but for now, maybe I'll turn something like a quoit out of a contrasting timber and see how that looks. That doesn't mean that I won't be trying a stone base at some time - I'm sure that I will, just want to try it in a contrasting wood first.
In a week's time I'll be collecting about 100 assorted bowl blanks from a workshop clearance that I've bought. As yet I've seen the contents only through photos, so I can't wait to get my hands on it and get started.
I return to work next week after a fortnight's Easter hols from school, so there'll be much less opportunity for turning, but I'm sure that I'll find the odd hour!
Les