Console error when trying to use gizmos?

I'm getting these errors in the console and I can't figure out why.

"error CS0117: Gizmos' does not contain a definition for color'" and

"error CS0117: Gizmos' does not contain a definition for DrawWireSphere'"

everything in my code looks right though.

 using UnityEngine;
 using System.Collections;
 
 public class Gizmos : MonoBehaviour {
 
     public float gizmoSize = 0.75f;
     public Color gizmoColor = Color.yellow;
 
     void OnDrawGizmosSelected()    {
         Gizmos.color = gizmoColor;
         Gizmos.DrawWireSphere (transform.position, gizmoSize);
     }
 }