Be sure to get the fumes out of the room before she gets home! :)

I don't think it sounds hokey at all. I think it is insightful of you to
realize that one's environment can affect them.
There has been much research done on the psychological affects of colours on
people, mostly by companies trying to make us buy things we don't need.
(ever wonder why fast-food restaurants are always orange, yellow and red?)

It is hard to find reliable, scientific information about color and how it
affects us - there are a lot of "New Age"-type websites that say a lot, but
can't back it up.
But this is what I found...

For a simple overview:
http://www.home-decorating-made-easy.com/interior-paint-colors.html

Here is a website with a Bulletin-board and many links, so you can ask some
questions:
The site is created by a Master of Fine Arts from the University of Hawaii
who consults for industry, so I believe she is reputable.

http://www.colormatters.com/entercolormatters.html

From my personal experience, my father was a hospital administrator when I
was young, and he asked me what I thought one day when he took me to work. I
told him the colors were awful - the hallways, doors, and windows were all
painted bright red, orange, green, yellow. Just loud and gaudy. He took my
naive advice, and used less-loud colors. I never got any feedback, though,
on what people thought. But it was obvious to me as a child that loud colors
were not soothing.

Just as a sidenote: There is a phenomenon called "synesthesia,"  in which
the five senses can overlap, so people "hear" colors and "see" sounds. The
reason I mention it,  is that it is good evidence that colors do affect us,
on a deep, subconscious level. So it is wise of you to ask this question.
and perhaps you can pick up some CDs of music or nice sounds to aid the
healing process.

http://web.mit.edu/synesthesia/www/synesthesia.html

Nope.

Good luck! It sounds like your relative is lucky to have such attention.

---

Some of us believe that humans ARE  affected by colors the same as heat,
cold, height, and so on.

You need much more information that what you can obtain through a posting
here.

There are a few books on the subject.  How to Heal with Color by Ted Andrews
is one.  According to this book different colors affect different parts of
the body.  For example violet affects the pineal gland.  Violet is good for
cancerous conditions.  On the other hand, green promotes growth - not good
in the presence of tumors.

Too much of one color can overstimulate or aggravate conditions.

Another view is Feng Shui.

http://www.wofs.com/

There's a few books by Lillian Too on decorating for health.  Try a Google
search.

The main advice is to maintain all surroundings cluter free.

According to Feng Shui a flower arrangement in the middle of the room with
red and yellow flowers promotes healing.

I hope you find a way to surround this person with what she needs.
Moe

There is nothing hokey about colors!
Colors such as gold, earthy brown, pink, and red would be very
benificial.
These would help to bring strength and healing.
Violet would also be an ok choice for raising the vibration of the
person.

Jenny