Unfortunately that's exactly what most vendors have been doing as well - just keeping it invisible and painting on eyebrows and usually with no options.  

I try to support vendors who at least give us color options on their painted-on eyebrows but keep wishing someone would dare to make a texture pack utilising this eyebrow geometry to give us 4-5 eyebrow shapes as well as colours.  In return, I could do without the 4938476021788 lipstick shades :)