Don't out a interpolated color change

It will should be determined by colorization mask in fragment shader

data/shaders/instanced_grass.vert

@@ -30,7 +30,7 @@ in vec4 misc_data;
 
 out vec3 nor;
 out vec2 uv;
-out vec2 color_change;
+flat out vec2 color_change;
 #ifdef Use_Bindless_Texture
 flat out sampler2D handle;
 flat out sampler2D secondhandle;

data/shaders/instanced_grass_pass2.frag

@@ -14,7 +14,7 @@ flat in sampler2D thirdhandle;
 #endif
 in vec3 nor;
 in vec2 uv;
-in vec2 color_change;
+flat in vec2 color_change;
 out vec4 FragColor;
 
 #stk_include "utils/getLightFactor.frag"

data/shaders/instanced_object_pass.vert

@@ -39,7 +39,7 @@ out vec3 bitangent;
 out vec2 uv;
 out vec2 uv_bis;
 out vec4 color;
-out vec2 color_change;
+flat out vec2 color_change;
 #ifdef Use_Bindless_Texture
 flat out sampler2D handle;
 flat out sampler2D secondhandle;

data/shaders/instanced_object_pass2.frag

@@ -12,7 +12,7 @@ flat in sampler2D thirdhandle;
 
 in vec2 uv;
 in vec4 color;
-in vec2 color_change;
+flat in vec2 color_change;
 out vec4 FragColor;
 
 #stk_include "utils/getLightFactor.frag"

data/shaders/instanced_objectref_pass2.frag

@@ -11,7 +11,7 @@ flat in sampler2D thirdhandle;
 #endif
 in vec2 uv;
 in vec4 color;
-in vec2 color_change;
+flat in vec2 color_change;
 out vec4 FragColor;
 
 #stk_include "utils/getLightFactor.frag"

data/shaders/instanced_skinning.vert

@@ -39,7 +39,7 @@ out vec3 tangent;
 out vec3 bitangent;
 out vec2 uv;
 out vec4 color;
-out vec2 color_change;
+flat out vec2 color_change;
 #ifdef Use_Bindless_Texture
 flat out sampler2D handle;
 flat out sampler2D secondhandle;