shader adjustments to account for modulate value

shader/swaying_plant.gdshader

@@ -26,6 +26,9 @@ uniform float heightOffset : hint_range(0.0, 1.0);
 // With the offset value, you can if you want different moves for each asset. Just put a random value (1, 2, 3) in the editor. Don't forget to mark the material as unique if you use this
 uniform float offset = 0;
 
+// caching color settings to reapply modulate value
+varying vec4 modulate;
+
 float getWind(vec2 vertex, vec2 uv, float time){
     float diff = pow(maxStrength - minStrength, 2.0);
     float strength = clamp(minStrength + diff + sin(time / interval) * diff, minStrength, maxStrength) * strengthScale;
@@ -47,8 +50,13 @@ float noise(vec2 x) {
 }
 
 void vertex() {
+	modulate = COLOR;
     vec4 pos = MODEL_MATRIX * vec4(0.0, 0.0, 0.0, 1.0);
     //float time = TIME * speed + sin(VERTEX.x * noise(VERTEX.xy) * offset);
     float time = TIME * speed + sin(pos.x * offset) * cos( pos.x * offset)  ;
     VERTEX.x += getWind(VERTEX.xy, UV, time);
 }
+
+void fragment() {
+  COLOR = modulate * COLOR;
+}