LED wiring

[somebodyelse5]

Ive seen a few guys on here do some pretty impressive stuff with LED's and was hoping some one could give me a bit of advice with my project.

Im planning on running either 10 or 20 Green LED's on the bottom of a skateboard im going to be making. I have the mounting figured out for the most part.

Im planning on using a 9V battery as the supply, but should I run them in parallel or in series?

Id like to do Blue LED, but cant seem to find them, should I stick with green? is green simpler? I know green requires less Forward Voltage.

This site shows them run as a large parallel composed of smaller series.
Image of How to Wire a LED Display: 2 of 2 images from Wiring of LED Displays Made Easy on Bright Hub

Any advice you guys have?
I have a basic understanding of circuits and circuit elements, but real world apps of LED's werent covered in my electrical engineering class haha.

[somebodyelse5]

bump bump bump

[Vegas250RR]

EBAY... I can run a strip of LEDS for 48+ hours straight on 1 9v battery! I do it all the time with my ATV whip

24cm Car Green 24-LED Neon Flexible PVC Strip Light: eBay Motors (item 250641143295 end time May-31-10 20:04:57 PDT)

[somebodyelse5]

Originally Posted by Vegas250RR

EBAY... I can run a strip of LEDS for 48+ hours straight on 1 9v battery! I do it all the time with my ATV whip

24cm Car Green 24-LED Neon Flexible PVC Strip Light: eBay Motors (item 250641143295 end time May-31-10 20:04:57 PDT)

How much for one of those strips? I was planning on buying the individual LEDs and resistors from radio shack to wire to the the board.

[Vegas250RR]

24cm Car Green 24-LED Neon Flexible PVC Strip Light: eBay Motors (item 250642856444 end time Jun-03-10 20:15:09 PDT)

you gotta click the links man!

[somebodyelse5]

Originally Posted by Vegas250RR

24cm Car Green 24-LED Neon Flexible PVC Strip Light: eBay Motors (item 250642856444 end time Jun-03-10 20:15:09 PDT)

you gotta click the links man!

didnt even notice there was a ling in there!