if it is the same spider i am thinking of you probly found it around your house out side and/or around your garden. The spider is called the Argiope Aurantia spider. Thay are most comionly found out side around flowers of vegetables.
Green Lynx Spider
An Arrowhead spider is brown with a green back. This spider is also known as a Triangle Orb Weaver. This spider is not venomous.
red + blue = purple blue + yellow = green red +yellow = orange orange +blue = brown yellow + purple = brown red + green = brown
look up a green lynx spider
Red and green and add yellow to get a lighter brown red+green blue + orange pink + green purple + green purple + yellow red + green
Light green, yellow and white
for me its yellow or green
Red + yellow + green = brown.
Spiders are all colors (and they change color when the moult to camouflage themselves better!)
spiders can be any color some spiders are blended with other colors, some might have a design on their back
Blue - Neutral Brown - Life Yellow/Green - Earth
Hi! I found a spider similar to the one you're describing on a lavender plant in my Southern California garden. It appears to be a Western variation of the Peucetia Viridans or Green Lynx Spider, see here http://bugguide.net/node/view/30278.