user114: I currently have a Mega2560 with the LCD4884 Shield. The Shield is good for putting out text and simple pixel images. But I am wondering if there is something that has a full range of colours that would work with the Arduino? The screen size would only have to be a few inches in size.

user35: Another very cool screen is the official Arduino TFT LCD Screen. (Datasheet if you're curious.)
It's a 1.77" screen, with a resolution of 160x128. It has a micro-SD slot in it, which is easily accessible. It is a color screen, with up to 18 bit per pixel. 
The extremely nice thing with this screen is that since it's officially supported, you don't need to do anything extra to support it. The official Arduino TFT library works perfectly with it. However, according to Jameco:

Library Update: There is a known issue with the TFT library supplied
  in IDE versions 1.0.5 and 1.5.4 Beta. You will need to replace the
  library. We have zipped up the updated TFT library for both versions
  available here. Just delete the existing library and copy in the
  replacement for the appropriate IDE version and restart the IDE. (IDE
  v1.0.5 or v1.5.4)

So beside that minor fix, everything should be easy and quick to work with. This page has some code samples which should make it easy to work with.

user113: There's also a 2.2" Adafruit TFT.
The nice things about the Adafruit displays are:
i) library support for both the display and the graphics core library. So it's easy to get it up and running.
The built in frame buffer reduces resource requirements on Arduino.

user24: There are actually several shields that have color screens on them. Many of the shields are just regular mini TFT displays, however there are also touch screen ones.
Here is one from Adafruit that includes a MicroSD holder and a Joystick.
Here is one from Radio Shack that features a 2.8 inch screen with touch capabilities 
As far as screen size, many of the screens are only about an 1 inch across, however the biggest I have ever been able to find are 2.8 in.

114: <p>I currently have a Mega2560 with the LCD4884 Shield. The Shield is good for putting out text and simple pixel images. But I am wondering if there is something that has a full range of colours that would work with the Arduino? The screen size would only have to be a few inches in size.</p>
 35: <p>Another very cool screen is the official <a href="http://store.arduino.cc/index.php?main_page=product_info&amp;products_id=288#.UwlAY_kiEw8" rel="nofollow">Arduino TFT LCD Screen</a>. (<a href="http://arduino.cc/documents/datasheets/A000096_Datasheet_HTF0177SN-01-SPEC.pdf" rel="nofollow">Datasheet</a> if you're curious.)</p>

<p>It's a 1.77" screen, with a resolution of 160x128. It has a micro-SD slot in it, which is easily accessible. It is a color screen, with up to 18 bit per pixel. </p>

<p>The extremely nice thing with this screen is that since it's officially supported, you don't need to do anything extra to support it. The <a href="http://arduino.cc/en/Reference/TFTLibrary#.UwlB__kiEw8" rel="nofollow">official Arduino TFT library</a> works perfectly with it. However, according to <a href="http://www.jameco.com/1/1/52373-a000096-tft-lcd-screen-runs-5vdc-shields.html" rel="nofollow">Jameco</a>:</p>

<blockquote>
  <p>Library Update: There is a known issue with the TFT library supplied
  in IDE versions 1.0.5 and 1.5.4 Beta. You will need to replace the
  library. We have zipped up the updated TFT library for both versions
  available here. Just delete the existing library and copy in the
  replacement for the appropriate IDE version and restart the IDE. (IDE
  v1.0.5 or v1.5.4)</p>
</blockquote>

<p>So beside that minor fix, everything should be easy and quick to work with. <a href="http://arduino.cc/en/Reference/TFTLibrary#.UwlB__kiEw8" rel="nofollow">This page</a> has some code samples which should make it easy to work with.</p>
 113: <p>There's also a <a href="http://www.adafruit.com/products/1480">2.2" Adafruit TFT</a>.</p>

<p>The nice things about the Adafruit displays are:
i) library support for both the <a href="https://github.com/adafruit/Adafruit_ILI9340">display</a> and the <a href="https://github.com/adafruit/Adafruit-GFX-Library">graphics core library</a>. So it's easy to get it up and running.</p>

<p>The built in frame buffer reduces resource requirements on Arduino.</p>
 24: <p>There are actually several shields that have color screens on them. Many of the shields are just regular mini TFT displays, however there are also touch screen ones.</p>

<p><a href="http://www.adafruit.com/products/802?gclid=CK3Mk63SxrwCFedlOgodA3IABQ">Here is one</a> from Adafruit that includes a MicroSD holder and a Joystick.</p>

<p><a href="http://www.radioshack.com/product/index.jsp?productId=12688460&amp;CAWELAID=120125420000001702&amp;catargetid=120125420000031766&amp;cadevice=c&amp;cagpspn=pla&amp;gclid=CMbdyJ_TxrwCFW1nOgodHF4AGg">Here is one</a> from Radio Shack that features a 2.8 inch screen with touch capabilities </p>

<p>As far as screen size, many of the screens are only about an 1 inch across, however the biggest I have ever been able to find are 2.8 in.</p>
