test-input: Set test filter to partially green

Mostly used for testing, partially green allows us to gauge whether or
not multiple filters are being properly applied

test/test-input/data/test.effect

@@ -1,7 +1,7 @@
 uniform float4x4 ViewProj;
 uniform texture2d image;
 
-uniform float4 color = {0.0, 1.0, 0.0, 1.0};
+uniform float4 color = {0.5, 1.0, 0.5, 1.0};
 
 sampler_state texSampler {
 	AddressU  = Clamp;