I used to not be a big fan of roses -- but with over a hundred species and thousands of cultivars, I've definitely found some I love!
Yes and their smell is very distinctive. 
They have got to be one of the most popular ingredients in perfumes -- and they have a cultural significance in many societies, too.
I personally don't like rose smelling perfumes but a red rose is considered a symbol of love.
The Red Rose of Lancashire also served as a heraldic symbol and badge of Henry IV of England...just one of many times the rose has served as symbol!
Yes they come in various colors like yellow, orange, white and pink.
Color psychology
"color psychology"' is the study of hues as a determinant of human behavior. Color influences perceptions that are not obvious, such as the taste of food. Colors can also enhance the effectiveness of placebos. For example, red or orange pills are generally used as stimulants. Color can indeed influence a person; however, it is important to remember that these effects differ between people. Factors such as gender, age, and culture can influence how an individual perceives color. For instance, heterosexual men
published by EMI Music Publishing, London, 1977:"
I'm a young girl, and have just come over,
Over from the country where they do things big,
And amongst the boys I've got a lover,
And since I've got a lover, why I don't care a fig.
The boy that I love, they call him a cobbler,
But he's not a cobbler, allow me to state.
For Johnny is a tradesman and he works in the