Help chaning Netch Belly Glow

[SirSquidly]

Alright, is there an easier way to retexture the Netch's glowing belly?

I am looking to re-texture the belly glow from it's normal blue to a pink color, and later do the same but making it green.

 

I was able to easily re-texture the body itself by just changing the color balance.

However, when I get to the belly things got complex.

 

The only way I found to change the belly glow is to change all of this:

http://i.imgur.com/glTcmLX.png

 

 

Is there an easier way to achieve this, without spending an hour or so changing every value here?