Fix missing vertex color in gles2 driver

Also make sure all vertex colors are applied after colorization is done

data/shaders/ge_shaders/alphatest.frag

@@ -13,7 +13,6 @@ void main()
     vec4 tex_color = sampleMeshTexture0(f_material_id, f_uv);
     if (tex_color.a * f_vertex_color.a < 0.5)
         discard;
-    tex_color.xyz *= f_vertex_color.xyz;
 
     if (f_hue_change > 0.0)
     {
@@ -23,5 +22,6 @@ void main()
         tex_color = vec4(new_color.r, new_color.g, new_color.b, tex_color.a);
     }
 
+    tex_color.xyz *= f_vertex_color.xyz;
     o_color = vec4(tex_color.xyz, 1.0);
 }

data/shaders/irrlicht/COGLES2FixedPipeline.fsh

@@ -69,6 +69,7 @@ vec4 renderSolid()
 				max(old_hsv.y, saturation)), vec2(mask_step, mask_step));
 			Color.rgb = hsvToRgb(vec3(new_xy.x, new_xy.y, old_hsv.z));
 		}
+		Color.rgb *= varVertexColor.rgb;
 		Color.a = 1.0;
 	}
 	else
@@ -76,7 +77,6 @@ vec4 renderSolid()
 		Color = varVertexColor;
 		Color.a = 1.0;
 	}
-		
 	return Color;
 }
 
@@ -150,8 +150,7 @@ vec4 renderTransparent()
 
 vec4 renderTransparentVertexColor()
 {
-	vec4 Color = varVertexColor;
-
+	vec4 Color = vec4(1.0, 1.0, 1.0, 1.0);
 	if(uTextureUsage0)
 	{
 		Color *= texture2D(uTextureUnit0, varTexCoord0);
@@ -162,6 +161,7 @@ vec4 renderTransparentVertexColor()
 			vec3 new_color = hsvToRgb(vec3(new_xy.x, new_xy.y, old_hsv.z));
 			Color.rgb = vec3(new_color.r, new_color.g, new_color.b);
 		}
+		Color *= varVertexColor;
 	}
 
 	return Color;

data/shaders/sp_alpha_test.frag

@@ -18,7 +18,6 @@ void main(void)
     {
         discard;
     }
-    col.xyz *= color.xyz;
 
     if (hue_change > 0.0)
     {
@@ -27,6 +26,7 @@ void main(void)
         vec3 new_color = hsvToRgb(vec3(new_xy.x, new_xy.y, old_hsv.z));
         col = vec4(new_color.r, new_color.g, new_color.b, col.a);
     }
+    col.xyz *= color.xyz;
 
 #if defined(Advanced_Lighting_Enabled)
     vec4 layer_2 = sampleTextureLayer2(uv);