Nikon D1 my D1 will only take black and white photos not color wha\t is wrong???????????

There is a setting for that alot of professional photographers love black and white as we all do color is not that challenging

Press the Auto button (camera icon). Press the MENU button to bring up the shooting menu. Select "Color Options" then select "Black-and-White".

Unless you're just snapshooting, I recommend shooting in color and then converting to black-and-white using photo-editing software on a computer. You get much better control over contrast, brightness, etc. than what the camera gives you.

Look under "Color Options" in the Shooting menu.

Did you bring it into a warm environment and expose every square inch to condensation?

Here's the manual (free download)
http://safemanuals.com/user-guide-instructions-owner-manual/NIKON/D40X-_E

Black and white is a menu option......

Select > Shooting menu
Select > Optimise image
Select > Black and white

Page 68 of the manual has full details of other options.

Note that you can also change photos to black and white in good post processing packages (such as Adobe Photoshop), although invariably there is some quality loss over original capture.

Check your white balance or wb button.

Depends on what you are doing, to print black and white documents only it is better an monochrome laser. To print photos, few color and black and white documents for a home users is generally better an inkjet.
Good color laser are big and expensive.

Laser toners cartridge cost a bit more but last longer.

Generally, if you print only B&W, it is better a laser.
If you print some documents and you want to print photos, then get a good inkjet.
If you want to print loads of B&W and color, and you do not need to print photos, then you can buy a color laser.

The Nikon D70 does not have a black-and-white mode setting.

However, you can take your photo in color and then use software to convert it to a grayscale photo. (Black and white implies an image with only those two values per pixel; grayscale can have 8 to 16 bits per pixel.) Most photo editing packages have a "desaturate" feature that does an automated conversion to grayscale.

The open source image editor Gimp has a "channel mixer" dialog that would allow you to approximate the effect of various filters before performing the desaturate function. This would allow you to experiment with the procedures if you do not have a commercial photo editor like Adobe PhotoShop. There is a special wrapper of Gimp that puts its interface into a configuration like that of PhotoShop; look for "GimpShop". The open source image manipulation package ImageMagick may also be used if you prefer working with command line utilities.

You can't, there is no black and white mode on the D50. You will need to take color photos and convert them with photo editing tool.

I think it's one or the other because the camera doesn't know what you want to color and what you don't want to color. Thats something more for Photoshop to do.