[StratComm]

I'm not sure I follow you exactly, but as I'm reading it you want an indexed color on the textures that can be reassigned by the game engine rather than by changing the media.  The short answer there is no, FS2 does not impliment a texture modification system (a-la Homeworld/HW:Cat/HW2, the CnC games, etc.) to accomplish that.  There is, however, texture replacement, so if you are making a model and have sections that you want to be easily recolored, you can either make multiple instances of the base texture that are pre-colored and do texture replacement on them or you can assign special textures to the polygons that should change and swap that out.

[Mr_Maniac]

my next question is a bit complex. is it possible to use an use an grey colored texture were i can change the color
without make color in texture

Well.. As said before: not "really"...
AFAIK, the HUD-Textures are grey and get colored to whatever you choose in the Options...

[Gast9991]

thx

i will explain it with an example u have an laserglow wich hast no color and if i want an red laserglow it should take texture
and add the red color if i want an blue color it should add the blue color and so on
if FSopen can make it its easy to recolor much effects
if not there is an other way i make one texture with an alpha and do color under the main texture if multitexturing is allowed
but its easy to make the first than make it per multitexturing with 1x1 color textur and the main texture over

i hope u understand what i want if not i would post 3 small pictures for explain