Three quibbles from ignorant joe user (me):
1) Bloodline has a different tar structure than contact and irontek and the style file is called 'theme.cfg' instead of 'bloodline' and references the pixmaps differently. Also, I think themes are supposed to be tarred from ~/.fluxbox down, whereas yours start from '.fluxbox'.
2) I know the workspace switching arrows have been dropping in and out of development but you should probably provide pixmaps for them just in case - the 0.9.6 I just stuck on my Celeron Slack Flux has them - though I don't think my cvs on the Slack on this box does. Didn't want to reboot to find out. *g* Anyway - looks odd with odd blobs for buttons.
3) Probably should ship a background (any background) just because sid_flux or the X root window looks funny with your themes.
But that's all really trivial - I like them a *lot*. Particularly bloodline and contact. I like the 'lit up' effect and the vivid sharp bold colors - sort of a metallic sheen in a lot of areas. Great stuff. I wish I didn't utterly suck at graphics - or even plain color themes. That would be fun.
Oh - a last quibble - since flux has taken to throwing icons on the toolbar, it gets kind of busy with irontek's stylized stuff and those app icons sort of stepping on each other.
I'm not sure how I feel about all where flux is going, but those themes do look nice. Congrats. And thanks.