Re: Does color have an effect on heartrate?

Yes, color apparently does have an effect on heartrate. The effect of color 
appears to be physical. There were studies done on shining different colors of 
light on blind individuals, who cannot see colors, and the effects were similar 
to people who could see colors.

Your question was sent to the Neuroscience division of the Mad Scientist 
network, but most of the research has been done on this topic in the field of 
Psychology. Therefore, you should direct your research into the field of 
Psychology, particularly in the sub-field of Psychophysiology.  Another more 
recent field of study for color effects is the area of Nonverbal Communication 
research, so you might wish to look at research in this area, too.

Here are some Internet sites that have some information on your topic... 

1.) An individual has already designed a research project on your topic.  The 
information is at the following website... http://youth.net/nsrc/sci/sci050.html 

2.) The colors of LED lights (light emitting diode lights) appear to have 
different effects than normal light. http://www.krntech.mb.ca/relax/colrrslt.html 

3.) Here is some general information about the effects of color on the human 
body... http://geocities.com/CollegePark/Plaza/9956/tips.htm 

4.) And another one with general information... http://neptune.spaceports.com/~as/colorset/color_implications.html 

Good luck on your research project, and thank you for making new contributions 
to science.