Dunno how right this is but...
1 purple + blue = dark blue
2 purple + red = pink
3 yellow + blue = yellowish blue
4 .yellowish blue + purple = light pink
5. silver + red = redish silver
6 silver + orange = orange silver
7 silver + green = green silver
8 silver + yellow = yellow silver
9 silver + blue = blue silver
10 silver + purple = purple silver
11 orange silver + yellow silver = gold
12 purple silver + blue silver = light silver purple
13 purple silver + green silver = crimson silver
14 orange + red = reddish orange
15 orange + yellow = lightish orange
16 green + orange dark light orange
17 orange + blue = reddish orange
18 orange + purple = red
19 red + orange = light orange red
20 red + yellow = orange
21 red + green = tan
22 red + blue = light purple
23 red + purple = fuscia
24 blue + yellow = olive
25 blue + green = turqiouse
26 blue + purple = dark blue
27 green + blue = olive
28 green + blue = turqiouse
29 green + purple = red
30 yellow + purple = red
31 purple + yellow = red
32 turqouise + red = dark turquoise
33 orange + light orange red = dark orange
34 tan + light purple = red
35 fusica + reddish orange = lighter red
36 light orange + darker light orange = dark orange
37 darker blue + red orange = fuscia
38 red + olive = orange
Source:
www.guildwarsguru.com/forum/showthread.php?t=22324&highlight=chart
long face ?