I Bought a New Keyboard, and It's Beautiful!

[Cortexian]

Dont browns have the same tactile feel without the noisy click of blues?
also hows it compare in brightness to something like a saitek keyboard?

I owned an eclipse II for years and it was amazing then when i got the logitech g110 i've been so fucking disappointed by the back-lighting because even at highest intensity's it's nearly impossible to see.

TLR, I like bright keyboards, is it REALLY bright?

I had a Saitek Eclipse prior to my G110, and I was also disappointed with the backlighting of that keyboard. I had the G110 until I upgraded to the BlackWidow Ultimate 2013. The BlackWidow blacklighting is probably some of the brightest I've seen.

With that in mind, the K70 RGB is probably similar in lighting to the Saitek. Definitely much brighter than the G110, but not quite as bright as the BlackWidow. Though, the BlackWidow was so bright that I typically kept it at around 30% brightness.

Is it possible to auto change colors of keys depending on what program you are working on? E.g. highlighting Photoshop shortcuts

Yes, absolutely!

You can create "profiles" in the software, which you can then link to specific programs. The software will automatically switch to those profiles when it detects the program is running. Every profile can have multiple modes, which you can cycle between with an assigned hotkey (and you can set it to be any key you want, normally an unused key). You can also assign a hotkey to cycle between entire profiles if you'd like, but I'm fairly sure that using this will take they software out of "Automatic Profile Selection" mode until you put it back in. That means to auto profiles for programs until you manually put it back into Auto switching mode.

Can the keyboard flash when I get a killing spree in Halo

Not yet. There has been rumors about Corsair opening up the software at some point. Probably after it is out of beta, but for now the software is definitely beta.