Are Quad 22L2 's considered highly colored?

Can't speak of 22L. I have the 21L. If they have color...then I say, I love them that way. My experience with Quad dynamic speakers has been absolutely positive. For me they image well and are non-fatiguing. They reveal what you feed them with. And with my room treatment, they are in a totally new league. I am surprised that Phasecorrect found them fatiguing. I have listened to them for 4 hours straight and could still go on...till I realize that it is already past 3:00AM.
I feel you should audition the 22L and Hawk and then decide what you like. Both speakers have their "house sound". I auditioned and preferred the Quad "house sound", but YMMV.

I have owned them for the last 2 years in my Bedroom system.
Killer speakers for the price.
Very revealing... not fatiguing at all and excellent bass. My other speakers are Salk STs and Onix Rockets to give u an idea of the sound I like.

Speakers can be both colored and revealing at the same time. Those two are not mutually exclusive...

Just recently acquired a new pair of 22L2's and my overall experience with them has been very strong. I've listened to them 2 to 3 hours each morning and enjoyed every minute of it. NO, they're not fatiguing at all. They image very well and the bass is excellent.

One thing I did notice that Quad has come out with the 23L and 25L. They look awesome. The Quad 23L may suit your needs. Here are some links:

http://www.quad-hifi.co.uk/Product.aspx?lang=En&Tab=33

http://www.everestaudio.com/products/Quad-25L-Classic-loudspeaker-ssi.htm