MTG Salvation

I was wondering if it were possible to use the Gatherer to search for a specific color of card with specific off-color abilities. Something along the lines of:

"Blue creatures with red activated abilities".


For clarification, some examples of what I'm referring to:

Thornscape Battlemage
Whirlpool Warrior
Savage Gorilla
Aerie Mystics

Even cards like these:

Unburial Rites
Ancient Grudge
Jilt

Any help is appreciated! Also, sorry if this is the wrong forum for this type of question.

I'm no longer familiar with Gatherer, but you can certainly get very close on magiccards.info by using a query like this. Not perfect because it will throw up any creatures with an activated ability and a red (or whatever) mana symbol, whether or not the symbol is in the cost of the ability, but should be narrow enough to be useful.

You can use { } to search for mana symbols.

http://gatherer.wizards.com/Pages/Search/Default.aspx?action=advanced&text=+[{R}]&color=+@%28+[U]%29&type=+[%22Creature%22]

That's perfect. Thanks!