Thoughts about themes maintenance

[Jacques Le Roux]

Hi devs,

Themes are a great thing. Now we have 5 of them. The downside is maintenance. We (mostly Sascha, thanks) spend a lot of time on that 
for the layered lookups. I wonder if at some point we should not deprecate some of them. For instance, Dropping Crumbs is an 
evolution of Blue Light and has also evolued into Tomahawk, should we maintain them all?

Thanks

Jacques