well, i have created the psd in multiple layers, so you can gradient overlay to any colour combination you want. Do you use photoshop or another program?
In photoshop its, layer > style > gradient overlay
then you can tweak the blend style to however you want, and change the colour mix. You can put as many colours in there as you want too.
i have each mord split onto a separate layer (super/metroid/eris) so i just got the gradient to how i thought you wanted it on one word, and copied the layer style to the other words.
for the 3d part, i have that on a separate layer, and the colour can be changed with layer > style > color overlay.
i've put the psd in my box.net for you to have a play with.