As a natural blonde with pale skin, I am a huge fan of having my eyelashes tinted on a regular basis. My natural lashes are almost translucent on their own. I've also had my brows tinted but they always look too severe to my own eyes.
Some people might call lash tinting a luxury, but to me, it's acually a means of low-maintenance. I don't have to mess with mascara in the mornings and I don't have to mess with eye makeup remover in the evenings. Especially when I travel - that's two more items that I don't have to squeeze into my Ziploc bag! If I want to run errands on the weekend, all I need to apply is a little tinted sunscreen and I'm good to go. At least on my good skin days...
Personally, I've never tried the lash extensions. They sound like a lot more work and not really the look I prefer for myself. But extensions are a huge business, and only growing. I would certainly consider them for a special event or perhaps a "dressier" vacation than I usually take.
I just love the subtle definition that the tinting gives my eyes. I highly recommend the service for any natural blonde!