Change default layer colour Promis.e CONNECT Edition

Hello,

I have been looking at the Level Configuration Variables to change the default colour of the ECT_DGRM_BALLOON layer in Promis.e CONNECT Edition, but I cannot seem to figure out how to can change this.

It's currently set to 1 (blue), but we wish to set it to 0 (white).

I understand that I can go through drawing by drawing, however, this is quite impractical for a project with hundreds of drawings in it. 

Any help would be greatly appreciated.

Thanks,

Kate