- Nifty : fixed gradient material

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9446 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/niftygui/Common/MatDefs/Nifty/NiftyQuadGrad.vert

@@ -10,5 +10,5 @@ void main() {
     vec2 pos = (g_WorldViewProjectionMatrix * inPosition).xy;
     gl_Position = vec4(pos, 0.0, 1.0);
 
-    color = inIndex;
+    color = inColor;
 }